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1.
Medicine (Baltimore) ; 100(25): e26423, 2021 Jun 25.
Artículo en Inglés | MEDLINE | ID: mdl-34160430

RESUMEN

BACKGROUND: Skin pruritus is a common complication in patients with uremia. When the hemodialysis time of patients is extended, and the probability of skin pruritus is greater. Patients often have the symptoms of skin pruritus intolerable, affecting the normal sleep and normal life of patients. The patients with uremic pruritus often constant scratching and pruritus skin, resulting in broken skin, and further symptoms such as infection, and subsequent skin shedding, prurigo nodularis, and other adverse complications, aggravating the patient's condition. Some patients will experience symptoms such as depression and insomnia due to skin pruritus, and simply scratching the skin lead to infection. Severely affected patients may even show suicidal tendency, endangering the physical and mental health of patients, and it is needed to give the effective treatment to patients. Hemodialysis is a common treatment for uremic pruritus, which can effectively relieve the pruritus symptoms of patients. The drugs can also relieve the symptoms and improve the degree of pruritus in patients. And some studies show that traditional Chinese medicine UCG combined with HFH in the treatment of uremic pruritus has a very good effect, Therefore, this study will systematically evaluate the clinical efficacy and safety of UCG combined with HFH and HFH alone in the treatment of uremic pruritus. METHODS: Use computer to search English and Chinese databases, English databases include: PubMed, Web of Science, EMbase, The Cochrane Library. Chinese databases include: CNKI, CBM, WanFang Data and VIP databases, collecting the RCT on the clinical effectiveness and safety of UCG combined with HFH and HFH alone in the treatment of uremic pruritus. The retrieval time is from the beginning of each database to May 1, 2021. In order to improve the retrieval rate of the literature, the references cited in the included research are also collected and screened. Set Chinese and English as the search language. Two members of the research group independently collected, included and excluded the literatures. In case of disagreement, consulting the third party to assist in the judgment. For the literature with missing data, the original author should be contacted as far as possible to obtain complete data. Two evaluators evaluate the bias risk of included studies according to the Cochrane Handbook bias risk assessment tool for RCT. RevMan 5.3 software is used for statistical analysis and the forest plot is drawn to show the outcome indicators and funnel plot is drawn to show the publication bias. RESULTS: This study evaluates the advantages and disadvantages of traditional Chinese medicine UCG combined with HFH and HFH alone in the treatment of uremic pruritus through the clinical effectiveness and safety-related indicators. CONCLUSION: This study will give a positive conclusion on the efficacy and safety of uremic clearance granule in the treatment of uremic pruritus, and the research results will be published in professional journals in the form of academic papers, thus benefiting more patients. ETHICS AND DISSEMINATION: This study belongs to meta-analysis and all data comes from academic papers published publicly in formal academic journals, so there are no ethical issues involved in this study and no ethical review or approval is required. OSF REGISTRATION NUMBER: DOI 10.17605/OSF.IO/W8P5G.


Asunto(s)
Medicamentos Herbarios Chinos/administración & dosificación , Fallo Renal Crónico/terapia , Prurito/terapia , Diálisis Renal/efectos adversos , Uremia/terapia , Medicamentos Herbarios Chinos/efectos adversos , Humanos , Fallo Renal Crónico/complicaciones , Metaanálisis como Asunto , Prurito/diagnóstico , Prurito/etiología , Prurito/psicología , Ensayos Clínicos Controlados Aleatorios como Asunto , Índice de Severidad de la Enfermedad , Revisiones Sistemáticas como Asunto , Resultado del Tratamiento , Uremia/diagnóstico , Uremia/etiología
2.
Medicine (Baltimore) ; 100(21): e25995, 2021 05 28.
Artículo en Inglés | MEDLINE | ID: mdl-34032717

RESUMEN

BACKGROUND: Chronic kidney disease (CKD)-associated pruritus (CKD-aP) contributes to poor quality of life, including reduced sleep quality and poor sleep quality is a source of patient stress and is linked to lower health-related quality of life. This study aimed to investigate the effectiveness of zolpidem 10 mg and acupressure therapy on foot acupoints to improve the sleep quality and overall quality of life among hemodialysis patients suffering from CKD-aP. METHOD: A multicenter, prospective, randomized, parallel-design, open label interventional study to estimate the effectiveness of zolpidem (10 mg) oral tablets versus acupressure on sleep quality and quality of life in patients with CKD-aP on hemodialysis. A total of 58 hemodialysis patients having sleep disturbance due to CKD-aP completed the entire 8-week follow-up. The patients were divided into a control (acupressure) group of 28 patients and an intervention (zolpidem) group of 30 patients. RESULTS: A total of 58 patients having CKD-aP and sleep disturbance were recruited. In the control group there was a reduction in the PSQI score with a mean ±â€ŠSD from 12.28 ±â€Š3.59 to 9.25 ±â€Š3.99, while in the intervention group the reduction in PSQI score with a mean ±â€ŠSD was from 14.73 ±â€Š4.14 to 10.03 ±â€Š4.04 from baseline to endpoint. However, the EQ5D index score and EQ-visual analogue scale (VAS) at baseline for the control group with a mean ±â€ŠSD was 0.49 ±â€Š0.30 and 50.17 ±â€Š8.65, respectively, while for the intervention group the values were 0.62 ±â€Š0.26 and 47.17 ±â€Š5.82, respectively. The mean EQ5D index score in the control group improved from 0.49 ±â€Š0.30 to 0.53 ±â€Š0.30, but in the intervention group there was no statistical improvement in mean EQ5D index score from 0.62 ±â€Š0.26 to 0.62 ±â€Š0.27 from baseline to week 8. The EQ 5D improved in both groups and the EQ-VAS score was 2.67 points higher at week 8 as compared to baseline in the control group, while in the intervention group the score was 3.33 points higher at week 8 as compared to baseline. Comparing with baseline, the PSQI scores were significantly reduced after week 4 and week 8 (P =  < .001). Furthermore, at the end of the study, the PSQI scores were significantly higher in the control as compared to the intervention group (P = .012). CONCLUSION: An improvement in sleep quality and quality of life among CKD-aP patients on hemodialysis has been observed in both the control and intervention groups. Zolpidem and acupressure safety profiling showed no severe adverse effect other that drowsiness, nausea and daytime sleeping already reported in literature of zolpidem.


Asunto(s)
Acupresión/métodos , Prurito/terapia , Insuficiencia Renal Crónica/complicaciones , Trastornos del Inicio y del Mantenimiento del Sueño/terapia , Zolpidem/administración & dosificación , Acupresión/efectos adversos , Puntos de Acupuntura , Adolescente , Adulto , Femenino , Pie , Humanos , Masculino , Persona de Mediana Edad , Prurito/diagnóstico , Prurito/etiología , Prurito/psicología , Calidad de Vida , Diálisis Renal/efectos adversos , Insuficiencia Renal Crónica/terapia , Índice de Severidad de la Enfermedad , Trastornos del Inicio y del Mantenimiento del Sueño/etiología , Trastornos del Inicio y del Mantenimiento del Sueño/psicología , Resultado del Tratamiento , Escala Visual Analógica , Adulto Joven , Zolpidem/efectos adversos
3.
Am J Clin Dermatol ; 21(5): 601-618, 2020 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-32607945

RESUMEN

Chronic pruritus, defined as an unpleasant sensation resulting in a need to scratch that lasts more than 6 weeks, is a prevalent and bothersome symptom associated with both cutaneous and systemic conditions. Due to complex pathogenesis and profuse contributing factors, chronic pruritus therapy remains challenging. Regardless of the well-established antipruritic properties of classic pharmacotherapy (topical therapy, phototherapy and systemic therapy), these methods often provide insufficient relief for affected individuals. Owing to the growing interest in the field of pruritic research, further experimental and clinical data have emerged, continuously supporting the possibility of instigating novel therapeutic measures. This review covers the most relevant current modalities remaining under investigation that possess promising perspectives of approval in the near future, especially opioidergic drugs (mu-opioid antagonists and kappa-opioid agonists), neurokinin-1 receptor antagonists, biologic drugs, Janus kinase inhibitors, ileal bile acid transporter inhibitors, aryl hydrocarbon receptor agonists and histamine H4 receptor antagonists.


Asunto(s)
Prurito/tratamiento farmacológico , Analgésicos Opioides/farmacología , Analgésicos Opioides/uso terapéutico , Antipruriginosos/uso terapéutico , Factores de Transcripción con Motivo Hélice-Asa-Hélice Básico/agonistas , Factores Biológicos/uso terapéutico , Enfermedad Crónica/terapia , Ensayos Clínicos como Asunto , Humanos , Inhibidores de las Cinasas Janus/uso terapéutico , Antagonistas del Receptor de Neuroquinina-1/uso terapéutico , Fototerapia/métodos , Prurito/etiología , Prurito/psicología , Calidad de Vida , Receptores de Hidrocarburo de Aril/agonistas , Receptores Histamínicos H4/antagonistas & inhibidores , Receptores Opioides kappa/agonistas , Receptores Opioides mu/antagonistas & inhibidores , Piel/inervación , Piel/patología , Resultado del Tratamiento
4.
Ital J Pediatr ; 46(1): 11, 2020 Jan 30.
Artículo en Inglés | MEDLINE | ID: mdl-32000823

RESUMEN

Given the inadequate overall awareness of the main disease features and treatment modalities of pruritus in pediatric patients with atopic dermatitis, a multidisciplinary Italian expert group met with the major aim of increasing knowledge of the condition for improved diagnosis and better management among specialists involved in disease management. Herein, the overall features of the condition are reviewed, along with its etiopathogenesis and symptoms. Likewise, management options are summarized, emphasizing the need for a multidisciplinary approach, minimally composed of a management team that includes a pediatrician, dermatologist, psychologist, play assistant, and dedicated nurse. In addition to more traditional therapies such as emollients as highlighted by European guidelines, therapeutic patient education in a group or individually is highly encouraged as it helps patients and their parents to better understand the disease and provide practical guidance for dressing and bandaging. It can also aid in outlining coping strategies for itching and sleep disturbance. The utility of distraction techniques should also be stressed as such educational interventions involving the child and their parents can substantially improve the overall quality of life. All approaches should be tailored according to patient age and clinical features and requires individualized strategy to ensure good adherence by both children and their parents. Thus, a holistic approach embracing systemic, topical and psychological interventions is advocated in order to provide patients and their caregivers the best possible care.


Asunto(s)
Adaptación Psicológica , Cuidadores/psicología , Dermatitis Atópica/complicaciones , Padres/psicología , Prurito/etiología , Calidad de Vida , Niño , Dermatitis Atópica/epidemiología , Dermatitis Atópica/psicología , Humanos , Incidencia , Italia/epidemiología , Prurito/epidemiología , Prurito/psicología
5.
Acta Derm Venereol ; 100(2): adv00026, 2020 01 07.
Artículo en Inglés | MEDLINE | ID: mdl-31940046

RESUMEN

Beginning from embryological development, skin and psyche are closely related to physiological state regardless of age. Altering the homeostasis of one of these components impacts on the other, thereby substantiating that the relationship between itch and psyche is bilateral. Itch has a complex pathogenesis, which involves the peripheral and central nervous systems, as well as various inflammatory mediators. This paper reviews key aspects of itch pathogenesis, relevant associations with stress, the contagiousness of itch, psychological and psychiatric considerations related to itch, and the burden of itch with respect to impairment of health-related quality of life (HRQoL) and stigmatization. Despite the fact that itch-psyche associations still pose many questions, current knowledge supports the role of a holistic, interdisciplinary approach to these patients in order to improve their well-being.


Asunto(s)
Adaptación Psicológica , Costo de Enfermedad , Prurito/psicología , Calidad de Vida , Humanos , Prejuicio , Prurito/diagnóstico , Prurito/etiología , Prurito/terapia , Factores de Riesgo , Estereotipo , Estrés Psicológico/complicaciones , Estrés Psicológico/psicología
6.
J Eur Acad Dermatol Venereol ; 34(1): 180-183, 2020 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-31419346

RESUMEN

BACKGROUND: Itch is an integral part of clinical picture of superficial dermatophytoses which constitute a common and growing problem in India. OBJECTIVES: The study aimed to evaluate the prevalence, intensity and clinical characteristics of itch in superficial dermatophytosis. METHODS: The data concerning disease history and clinical type of dermatophytosis were obtained. The presence and various characteristics of itch were documented. Numerical Rating Scale (NRS) was utilized to assess the worst intensity of itch during the last 3 days and during the course of the disease. 4-Item Itch Questionnaire was utilized to assess itch extent, intensity, frequency and associated sleep impairment, while quality of life (QoL) impairment was assessed via Dermatology Life Quality Index. RESULTS: Ninety-nine patients with direct microscopic confirmation of dermatophytosis were included in the study. In 46.5% of subjects, the coexistence of tinea corporis and tinea cruris was noted, followed by tinea cruris (25.2%) and tinea corporis (13.1%). The majority of patients reported itch in the last 3 days (99%) and complained of itch limited to skin lesions (89.9%). According to NRS, the mean intensity of worst itch in the last 3 days was 6.8 ± 1.8 points. Severe and very severe itch was reported by 74.7% of patients. Itch was an isolated sensation in 34.3% of subjects, while 46.9% reported associated burning sensation. Itch was frequently exacerbated by sweating, hot temperature and wearing tight clothes. Difficulties in falling asleep and sleep awakenings were reported by 34.3% and 54.6% of subjects, respectively. Itch negatively influenced the well-being of patients and its intensity correlated with QoL impairment. CONCLUSIONS: Itch is an important symptom in superficial dermatophytoses and is associated with negative impact on sleep and carries a significant psychosocial burden. Acknowledging its presence is necessary in a holistic approach to these patients.


Asunto(s)
Epidemias , Prurito/diagnóstico , Prurito/epidemiología , Tiña/complicaciones , Tiña/epidemiología , Adolescente , Adulto , Anciano , Estudios Transversales , Femenino , Humanos , India , Masculino , Persona de Mediana Edad , Prevalencia , Prurito/psicología , Calidad de Vida , Índice de Severidad de la Enfermedad , Encuestas y Cuestionarios , Evaluación de Síntomas , Tiña/diagnóstico , Adulto Joven
7.
J Eur Acad Dermatol Venereol ; 34(6): 1280-1285, 2020 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-31838780

RESUMEN

BACKGROUND: Pruritus is a common symptom in many skin diseases. Music interventions have demonstrated their efficacy in different symptoms or diseases such as pain, depression and anxiety. OBJECTIVE: To evaluate the effects of a music intervention on pruritus. PATIENTS AND METHODS: A randomized controlled trial was conducted from November 2018 to April 2019. Fifty inpatients with pruritus intensity ≥3/10 in various chronic skin diseases were randomized in a music group or an emollient group. The primary endpoint was the evolution of pruritus as measured by the Numerical Rating Scale before and one hour after the procedure. The secondary judgement criteria were the effects on patient anxiety, the impact of pruritus on the quality of life and patient satisfaction (NCT03701971). RESULTS: Fifty patients with chronic pruritus were included, 62% were male, and the average age was 60.7 years. The most common diseases were psoriasis (N = 10), atopic dermatitis (N = 8) and contact eczema (N = 6). The average ItchyQol score was 64.8/110, showing a significant impact on quality of life. The intensity of pruritus decreased more significantly in the music intervention group than in the emollient group: 2.3 (SD 2.1) and 1.2 (SD 1.7), respectively (P < 0.05). There was a decrease in anxiety in both groups, with no statistical significant difference between groups. Among patients who received the music intervention, 64% reported feeling an improvement, 91% would recommend the music intervention, and 64% would like to continue this practice. DISCUSSION: Pruritus management is complex and requires first-line aetiological treatment. Aetiological or symptomatic treatments do not always provide enough relief; it is useful to find other therapeutic options. The music intervention has shown interest in our study. Its repeated use over the long term will be interesting to evaluate. As in pain, music may work by activating inhibitory neural circuits. The use of music is a simple method to manage chronic pruritus.


Asunto(s)
Musicoterapia , Prurito/terapia , Adulto , Anciano , Anciano de 80 o más Años , Ansiedad/etiología , Ansiedad/terapia , Enfermedad Crónica , Femenino , Humanos , Masculino , Persona de Mediana Edad , Satisfacción del Paciente , Estudios Prospectivos , Prurito/complicaciones , Prurito/psicología , Calidad de Vida , Índice de Severidad de la Enfermedad , Enfermedades de la Piel/complicaciones , Adulto Joven
8.
Dermatol Ther ; 32(6): e13100, 2019 11.
Artículo en Inglés | MEDLINE | ID: mdl-31583813

RESUMEN

Family dynamics play a major role in itch related dermatoses. The aim of the study was to evaluate the effectiveness of family constellation seminars (FCS) in the decrease of itch in atopic dermatitis (AD) and psoriasis. Thirty-one adult patients with chronic itch (16 with AD and 15 with psoriasis) were allocated to intervention group (FCS + G) and control group (CG). Patients from FCS + G have participated in a series of four FCS for 3 months. During the study period, all patients used only emollients. Itch was evaluated by 27-item questionnaire and skin condition was evaluated by SCORAD and PASI. The severity of itch in FCS + G decreased (Median; (25%;75%)) from 8.42 (6.57;11.92) initially to 4.78 (1.36;9.14); p < .01 after 1 month and (0.61 (0;6.66); p < .001) after 9 months after the psychological intervention with no significant changes in the CG. In the patients with AD in the FCS + G, SCORAD decreased (21.5 (14.4;40); 14.1 (7.3;15.5) p < .05; 7.2 (3.6;11); p < .05). In the FCS + G, itch decreased both in patients with AD and psoriasis, with less significant visible changes of skin in patients with psoriasis. Participation in FCS in a series of four seminars has high effect (r = .53) on reduction of itch and high effect (r = .74) on improvement of AD signs with lower effect on skin condition in patients with psoriasis for 4 months. Positive effect of FCS gradually increases during at least 9 months. Further studies for understanding FCS influence on the patients with itch are needed.


Asunto(s)
Dermatitis Atópica/terapia , Terapia Familiar/métodos , Familia/psicología , Prurito/terapia , Psoriasis/terapia , Adulto , Dermatitis Atópica/psicología , Femenino , Humanos , Masculino , Persona de Mediana Edad , Prioridad del Paciente , Prurito/psicología , Psoriasis/psicología , Índice de Severidad de la Enfermedad
9.
Am J Med Genet A ; 179(8): 1476-1482, 2019 08.
Artículo en Inglés | MEDLINE | ID: mdl-31081992

RESUMEN

The objective was to investigate the serial mediating effects of speech difficulties, patient health communication, and disease-specific worry in the relationship between neurofibromatosis (NF) symptoms (pain and skin symptoms) and total generic health-related quality of life (HRQOL) in children, adolescents, and young adults with NF Type 1 (NF1) from the patient perspective. The Speech, Communication, Worry, Pain, Skin Itch Bother, and Skin Sensations Scales from the Pediatric Quality of Life Inventory (PedsQL) NF1 Module and the PedsQL 4.0 Generic Core Scales were completed in a multi-site national study by 305 patients ages 5-25 years. A serial multiple mediator model analysis was conducted to test the hypothesized sequential mediating effects of speech difficulties, health communication, and worry as intervening variables in the association between NF1 symptoms and HRQOL. Symptoms predictive effects on total generic HRQOL were serially mediated by speech difficulties, patient health communication, and worry. In predictive analytics models utilizing hierarchical multiple regression analyses with age and gender demographic covariates, the pain, skin itch bother, and skin sensations multiple mediator models accounted for 61%, 59%, and 56% of the variance in generic HRQOL (p < .001), reflecting large effect sizes. Speech difficulties, patient health communication, and disease-specific worry explain in part the mechanism of symptoms predictive effects on total generic HRQOL in pediatric patients with NF1. Identifying NF1-specific predictors and serial mediators of total generic HRQOL in pediatric patients with NF1 from the patient perspective enables a patient-centered comprehensive care approach for children, adolescents, and young adults with NF1.


Asunto(s)
Ansiedad/psicología , Comunicación en Salud , Neurofibromatosis 1/psicología , Dolor/psicología , Prurito/psicología , Calidad de Vida/psicología , Trastornos del Habla/psicología , Adolescente , Adulto , Ansiedad/diagnóstico , Ansiedad/fisiopatología , Niño , Preescolar , Femenino , Humanos , Masculino , Neurofibromatosis 1/diagnóstico , Neurofibromatosis 1/fisiopatología , Dolor/diagnóstico , Dolor/fisiopatología , Prurito/diagnóstico , Prurito/fisiopatología , Análisis de Regresión , Índice de Severidad de la Enfermedad , Habla/fisiología , Trastornos del Habla/diagnóstico , Trastornos del Habla/fisiopatología
10.
Acta Gastroenterol Belg ; 82(1): 75-82, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-30888758

RESUMEN

Pruritus is a common, troublesome symptom in patients with cholestatic liver diseases, especially frequent in intrahepatic cholestasis of pregnancy (ICP) and in primary biliary cholangitis (PBC). Cholestatic associated pruritus can have profound effects on the quality of life. The underlying mechanism is still poorly understood. Severe potential pruritogens have been discussed, such as bile salts, opioids, steroid and lysophosphatidic acid (LPA), but none of these are considered as key mediators. Because of this unraveling pathophysiology the treatment of hepatogenic pruritus often represents a clinical challenge. The EASL guidelines have suggested a step-wise approach, starting with elimination of pruritogens by bile acid sequestrants (cholestyramine), in second line managing the metabolism of pruritogens (rifampicin) and in third-line and fourth- line by modifying the itch perception with µ-opioid antagonist or selective serotonin reuptake inhibitors (SSRI). In treatment-refractory pruritus interruption of the enterohepatic cycle by molecular absorbent recirculating system (MARS), nasobiliairy drainage or experimental therapy such as Ultraviolet B light therapy can be considered. Liver transplantation may be reserved for intractable pruritus. Clinical trials with novel agents are ongoing, potentially providing efficacious options in the future.


Asunto(s)
Colestasis/complicaciones , Prurito/complicaciones , Colestasis/psicología , Colestasis Intrahepática , Resina de Colestiramina , Femenino , Humanos , Embarazo , Prurito/psicología , Calidad de Vida
11.
Psychosom Med ; 80(4): 353-360, 2018 05.
Artículo en Inglés | MEDLINE | ID: mdl-29613940

RESUMEN

OBJECTIVE: Placebo effects relieve various somatic symptoms, but it is unclear how they can be enhanced to maximize positive treatment outcomes. Oxytocin administration may potentially enhance placebo effects, but few studies have been performed, and they have had conflicting findings. The study aim was to investigate the influence of positive verbal suggestions and oxytocin on treatment expectations and placebo effects for pain and itch. METHODS: One hundred eight female participants were allocated to one of the following four groups: (1) oxytocin with positive verbal suggestions, (2) placebo with positive verbal suggestions, (3) oxytocin without suggestions, and (4) placebo without suggestions. The administration of 24 IU oxytocin or a placebo spray was preceded by positive verbal suggestions regarding the pain- and itch-relieving properties of the spray or no suggestions, depending on group allocation. Pain was assessed with a cold pressor test, and itch was assessed with histamine iontophoresis. RESULTS: Positive verbal suggestions induced expectations of lower pain (F = 4.77, p = .031) and itch (F = 5.38, p = .022). Moreover, positive verbal suggestions elicited placebo analgesia (F = 5.48, p = .021) but did not decrease itch. No effect of oxytocin on the placebo effect or on expectations was found. CONCLUSIONS: Positive suggestions induced placebo analgesia but oxytocin did not enhance the placebo effect. Study limitations are that we only included a female sample and a failure to induce placebo effect for itch. Future studies should focus on how oxytocin might influence placebo effects, taken into account the role of sex, dose-dependent effects, and various expectation manipulations. TRIAL REGISTRATION: The study was registered as a clinical trial on www.trialregister.nl (number 6376).


Asunto(s)
Analgesia/psicología , Oxitocina/farmacología , Dolor/tratamiento farmacológico , Efecto Placebo , Prurito/tratamiento farmacológico , Sugestión , Adulto , Femenino , Humanos , Oxitocina/administración & dosificación , Dolor/psicología , Prurito/psicología , Resultado del Tratamiento , Adulto Joven
12.
Acta Derm Venereol ; 98(2): 268-274, 2018 Feb 07.
Artículo en Inglés | MEDLINE | ID: mdl-29057429

RESUMEN

Placebo effects are positive outcomes that are not due to active treatment components, which may be elicited even when patients are aware of receiving an inert substance (open-label). This proof-of-principle study investigated for the first time whether open-label placebo effects on itch can be induced by verbal suggestions alone. Ninety-two healthy volunteers were randomized to experimental (open-label suggestions) or control (no suggestions) groups. Self-reported itch evoked by histamine iontophoresis was the primary study outcome. In addition, itch expectations, skin condition and affect were assessed. The experimental group expected lower itch than the control group, which was, in turn, related to less experienced itch in this group only, although no significantly different itch levels were reported between groups. The results illustrate a potential role for open-label placebo effects in itch, and suggest that further study of verbal suggestions through an extensive explanation of placebo effects might be promising for clinical practice.


Asunto(s)
Efecto Placebo , Prurito/prevención & control , Sugestión , Conducta Verbal , Administración Cutánea , Adolescente , Adulto , Femenino , Voluntarios Sanos , Histamina/administración & dosificación , Histamina/efectos adversos , Humanos , Iontoforesis , Masculino , Países Bajos , Prueba de Estudio Conceptual , Prurito/inducido químicamente , Prurito/psicología , Autoimagen , Autoinforme , Factores de Tiempo , Adulto Joven
13.
PLoS One ; 12(9): e0182959, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28910291

RESUMEN

Nocebo effects, i.e., adverse treatment effects which are induced by patients' expectations, are known to contribute to the experience of physical symptoms such as pain and itch. A better understanding of how to minimize nocebo responses might eventually contribute to enhanced treatment effects. However, little is known about how to reduce nocebo effects. In the current randomized controlled study, we tested whether nocebo effects can be minimized by positive expectation induction with respect to electrical and histaminic itch stimuli. First, negative expectations about electrical itch stimuli were induced by verbal suggestion and conditioning (part 1: induction of nocebo effect). Second, participants were randomized to either the experimental group or one of the control groups (part 2: reversing nocebo effect). In the experimental group, positive expectations were induced by conditioning with verbal suggestion. In the control groups either the negative expectation induction was continued or an extinction procedure was applied. Afterwards, a histamine application test was conducted. Positive expectation induction resulted in a significantly smaller nocebo effect in comparison with both control groups. Mean change itch NRS scores showed that the nocebo effect was even reversed, indicating a placebo effect. Comparable effects were also found for histamine application. This study is the first to demonstrate that nocebo effects can be minimized and even reversed by conditioning with verbal suggestion. The results of the current study indicate that learning via counterconditioning and verbal suggestion represents a promising strategy for diminishing nocebo responses.


Asunto(s)
Condicionamiento Psicológico , Estimulación Eléctrica/efectos adversos , Histamina/efectos adversos , Prurito/psicología , Adulto , Femenino , Voluntarios Sanos , Humanos , Masculino , Efecto Nocebo , Prurito/etiología , Habla , Sugestión , Adulto Joven
14.
Acta Derm Venereol ; 97(1): 71-76, 2017 01 04.
Artículo en Inglés | MEDLINE | ID: mdl-27241458

RESUMEN

In brachioradial pruritus and notalgia paraesthetica, the 8% capsaicin patch is a novel and effective, but cost-intense, therapy. Routine data for 44 patients were collected 6 months retrospectively and prospectively to first patch application. The cost to health insurance and the patient, and patient-reported outcomes were analysed (visual analogue scale, numerical rating scale, verbal rating scale for pruritus symptoms, Dermatological Life Quality Index, and Patient Benefit Index). Mean inpatient treatment costs were reduced by €212.31, and mean outpatient treatment and medication costs by €100.74 per patient (p.p.). However, these reductions did not offset the high cost of the patch itself (€767.02 p.p.); thus the total cost to health insurance increased by €453.97 p.p. (p ≤ 0.01). The additional costs of therapy to the patient decreased by €441.06, thus the overall cost p.p. remained approximately the same (€3,306.03 vs. €3,318.94). Capsaicin patch therapy resulted in reduced pruritus, improved quality of life and greater patient benefit, thus long-term cost-efficiency analyses are necessary.


Asunto(s)
Antipruriginosos/administración & dosificación , Antipruriginosos/economía , Capsaicina/administración & dosificación , Capsaicina/economía , Parestesia/tratamiento farmacológico , Prurito/tratamiento farmacológico , Parche Transdérmico/economía , Análisis Costo-Beneficio , Femenino , Humanos , Masculino , Persona de Mediana Edad , Dimensión del Dolor , Parestesia/psicología , Estudios Prospectivos , Prurito/psicología , Calidad de Vida , Estudios Retrospectivos , Resultado del Tratamiento , Escala Visual Analógica
15.
Schmerz ; 30(5): 386-394, 2016 Oct.
Artículo en Alemán | MEDLINE | ID: mdl-27402263

RESUMEN

Research on placebo responses has made major progress in recent years. Placebo responses are psychobiological events, which are created by the entire therapeutic context. They can appear at any time, not only in experimental and clinical settings. Several studies on analgesia-related placebo research showed that patients have higher placebo responses in comparison to healthy participants, which may also last longer. Expectations play a key role in placebo analgesia. They can be induced via three central psychological mechanisms: 1) expectation induced via instructions, 2) expectation induced via classical conditioning and 3) expectation induced via social learning. These mechanisms are controlled by neurobiological structures and modulate pain perception resulting in pain relief by positive expectations and increased pain by negative expectations, the so-called nocebo effect. There is an ongoing discussion that these psychological mechanisms may also play a central role in inducing and maintaining itch-reducing placebo responses. The current state of research suggests that placebo responses could be used in clinical contexts and should not be viewed as being in competition with medications but as an additive increase in efficacy of a pharmacological substance through specifically induced placebo responses. This targeted use is also possible within ethical guidelines. Important prerequisites are that the research results can be transferred from healthy participants to patients and that the placebo responses are reproducible.


Asunto(s)
Dolor/tratamiento farmacológico , Dolor/psicología , Efecto Placebo , Anticipación Psicológica , Condicionamiento Clásico , Ética Médica , Adhesión a Directriz , Humanos , Prurito/psicología , Sugestión
16.
Hautarzt ; 67(8): 622-6, 2016 Aug.
Artículo en Alemán | MEDLINE | ID: mdl-27341824

RESUMEN

BACKGROUND: Besides biological factors, which cause or influence chronic pruritus, more and more attention has recently also been paid to psychological and psychoneuroimmunological factors which uphold the symptom. OBJECTIVES: This review article gives an overview of the state of research regarding psychological and psychoneuroimmunological factors and the resulting therapeutic options. MATERIALS AND METHODS: The article is based on a literature search in the PubMed database. RESULTS: Under experimental conditions, pruritus can be induced by verbal instructions and modulated by placebo and nocebo effects. Stressful life events can also induce pruritus or its exacerbation. This can also be demonstrated on a cellular level. CONCLUSION: The knowledge that pruritus intensity is modulated by cognitions, behavioral factors, and stress is important for the development and application of psychological interventions. More research should be done regarding psychological interventions in the treatment of chronic itch and they should be applied clinically more often.


Asunto(s)
Terapia Cognitivo-Conductual/métodos , Trastornos Mentales/psicología , Prurito/psicología , Prurito/terapia , Estrés Psicológico/prevención & control , Estrés Psicológico/psicología , Medicina Basada en la Evidencia , Humanos , Trastornos Mentales/complicaciones , Trastornos Mentales/terapia , Prurito/etiología , Estrés Psicológico/complicaciones , Resultado del Tratamiento
17.
J Am Acad Dermatol ; 75(3): 619-625.e6, 2016 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-27206757

RESUMEN

Chronic pruritus is a distressing symptom that is often refractory to treatment. Patients frequently fail topical therapies and oral over-the-counter antihistamines, prompting the clinician to consider alternative therapies such as neuroactive agents. Herein, the use of gabapentin and pregabalin, 2 medications well known for treating neuropathic pain and epilepsy that are occasionally used for relieving chronic pruritus is explored. The findings from original sources published to date to evaluate the use of gabapentin and pregabalin as antipruritic agents are explored. They are found to be promising alternative treatments for the relief of several forms of chronic pruritus, particularly uremic pruritus and neuropathic or neurogenic itch, in patients who fail conservative therapies.


Asunto(s)
Aminas/uso terapéutico , Ansiolíticos/uso terapéutico , Ácidos Ciclohexanocarboxílicos/uso terapéutico , Pregabalina/uso terapéutico , Prurito/diagnóstico , Prurito/tratamiento farmacológico , Calidad de Vida , Ácido gamma-Aminobutírico/uso terapéutico , Enfermedad Crónica , Femenino , Gabapentina , Humanos , Masculino , Satisfacción del Paciente/estadística & datos numéricos , Prurito/psicología , Medición de Riesgo , Índice de Severidad de la Enfermedad , Resultado del Tratamiento
18.
Acta Derm Venereol ; 96(5): 619-23, 2016 Jun 15.
Artículo en Inglés | MEDLINE | ID: mdl-26715067

RESUMEN

This study investigated sex-specific differences in itch perception and skin reactions, as modulated by verbal suggestions, and the role of the investigator's sex. Healthy volunteers (50 males, 50 females), divided into 4 groups, were tested by male and female investigators. Itch was induced via prick testing with sodium chloride and histamine in 4 runs; 2 control conditions (with no exaggerated verbal comments about expected itch) and 2 experimental conditions (with exaggerated verbal comments). After 5 min, wheal and flare reactions were measured and itch intensity was rated by subjects on a numerical rating scale. Exaggerated verbal suggestions resulted in higher itch intensity ratings in the sodium chloride and histamine condition, and higher unpleasantness ratings and a wheal of greater extent in the sodium chloride condition, as well as a flare of greater extent in the histamine condition. The magnitude of the differences between the exaggerated verbal suggestion conditions and respective control conditions was only significantly different between male and female investigators concerning flare size in the histamine condition. There were no differences between male and female participants. Therefore, sex differences may play only a minor role in nocebo-induced itch perception.


Asunto(s)
Percepción , Prurito/inducido químicamente , Prurito/psicología , Sugestión , Femenino , Voluntarios Sanos , Histamina/administración & dosificación , Humanos , Masculino , Factores Sexuales , Pruebas Cutáneas , Cloruro de Sodio/administración & dosificación , Adulto Joven
19.
Br J Dermatol ; 173(1): 83-92, 2015 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-25688924

RESUMEN

BACKGROUND: Primary cutaneous T-cell lymphoma (CTCL) is a rare but prevalent condition which can have a significant impact on many aspects of quality of life. However, there is little evidence of patients' lived experience of CTCL. OBJECTIVES: To understand in greater depth patients' experiences of living and coping with CTCL, and to inform the development of models of care for this population in line with U.K. METHODS: Semi-structured interviews were conducted with a purposive sample of patients with CTCL who attended an inner-city teaching hospital. Participants were purposively selected according to their disease stage, age, sex and ethnicity. RESULTS: Nineteen patients with CTCL (stages IB-IVB), aged between 41 and 83 years, participated in a single interview. This included 10 men; 15 people identified themselves as white British. Interviews lasted a median of 55 (range 28-170) min. Two main themes emerged: issues regarding diagnosis, particularly a perceived delay in diagnosis, and the impact of CTCL (subthemes related to physical well-being, practical concerns and psychological and social well-being and coping). CONCLUSIONS: Findings from this study illuminate the diverse effects of CTCL on patients' lives. The universal experience of delays in diagnosis was striking and a concern to patients. The disease, particularly its physical symptoms, had a significant impact on patients' lives, including employment, leisure and relationships. Despite the symptom burden and its impact, participants described effective coping strategies such as drawing on social support, maintaining normal lives and becoming well informed about CTCL. Proactive holistic assessment and management of the range of patient concerns is needed in providing care for patients with CTCL and their family and friends.


Asunto(s)
Adaptación Psicológica , Actitud Frente a la Salud , Linfoma Cutáneo de Células T/psicología , Prurito/psicología , Neoplasias Cutáneas/psicología , Adulto , Anciano , Anciano de 80 o más Años , Lechos , Costo de Enfermedad , Femenino , Humanos , Masculino , Persona de Mediana Edad
20.
J Ren Care ; 40(4): 249-56, 2014 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-24980265

RESUMEN

BACKGROUND: Few studies have focused on the effect of music in patients undergoing haemodialysis. OBJECTIVES: To determine the effects of live saxophone music on various physiological parameters and pain, mood and itching levels. DESIGN: A randomised controlled study with 114 patients undergoing haemodialysis with a control group (n = 57) and an experimental group (n = 57) who received 30 minutes of live saxophone music therapy. MEASUREMENTS: Systolic and diastolic blood pressure, pulse rate, glycaemia, oxygen saturation, pain, mood and itching levels were measured before and after the live music performance, resulting in baseline and post-test values for the patients in the experimental group. RESULTS: The experimental group showed a statistically significant reduction in pain level, and an improvement in mood and itching levels and in the oxygen saturation. CONCLUSION: Live saxophone music could be introduced to improve clinical and quality-of-life measures in patients undergoing haemodialysis.


Asunto(s)
Afecto , Nivel de Alerta/fisiología , Fallo Renal Crónico/enfermería , Fallo Renal Crónico/fisiopatología , Musicoterapia , Dimensión del Dolor/enfermería , Dimensión del Dolor/psicología , Prurito/enfermería , Prurito/psicología , Diálisis Renal/enfermería , Diálisis Renal/psicología , Anciano , Anciano de 80 o más Años , Femenino , Enfermería Holística , Humanos , Italia , Fallo Renal Crónico/psicología , Masculino , Persona de Mediana Edad , Prurito/fisiopatología , Diálisis Renal/efectos adversos
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