Differences of bioelectrical impedance in the development and healing phase of pressure ulcers and erythema in mouse model.

Pressure ulcers (PUs) are economically burdensome medical conditions. Early changes in pressure ulcers are associated with erythema. In this study, bioelectrical impedance was used to measure the differences between PUs and blanchable erythema. We divided 21 ICR mice into three groups: control, 1000 mmHg-1h, and 1000 mmHg-6h. Healthy skin, blanchable erythema, and PUs were induced on the dorsal skin. The results indicated an immediate increase in impedance, resistance, and reactance values in the pressure group after release, followed by a subsequent decrease until two days after release. Compared with the control group, impedance and reactance significantly increased by 30.9% (p < 0.05) and 30.1% (p < 0.01), respectively, in the 6 h-loading group immediately after release. One and two days after release, the 1 h-loading and 6 h-loading groups exhibited significantly different degrees of decline. One day after release, impedance and resistance decreased by 30.2% (p < 0.05) and 19.8% (p < 0.05), respectively, in the 1 h-loading group; while impedance, resistance, and reactance decreased by 39.2% (p < 0.01), 26.8% (p < 0.01), and 45.7% (p < 0.05), respectively, in the 6 h-loading group. Two days after release, in the 1 h-loading group, impedance and resistance decreased by 28.3% (p < 0.05) and 21.7% (p < 0.05), respectively; while in the 6 h-loading group, impedance, resistance, and reactance decreased by 49.8% (p < 0.001), 34.2% (p < 0.001), and 59.8% (p < 0.01), respectively. One and two days after release the pressure group reductions were significantly greater than those in the control group. Additionally, we monitored changes during wound healing. Distinguishing early PUs from blanchable erythema by noninvasive bioelectrical impedance technology may have applications value in early assessment of PUs.

Circadian rhythmicity on red ear syndrome in a patient with migraine: A case report.

BACKGROUND: Red ear syndrome (RES) was first described by Lance in 1994. It is characterized by recurrent attacks of redness of the ear, accompanied by burning pain, increased temperature, dysesthesia, and nosological relationship with headache. CASE: We report the case of a 43-year-old woman with migraine who developed RES. Redness episodes occurred at the same time of the day. She had a good therapeutic response to gabapentin. CONCLUSIONS: To the best of our knowledge, this is the first case of RES in which redness episodes occurred at the same time of the day.

Erythematous ear with drainage.

This case reminded us that not every moist, erythematous, crusting eruption is purely infectious.

Hand ulceration.

In the American Southwest, a common problem can be diagnosed with the knowledge of the local environment and its inhabitants.

Cutaneous homeostasis and epidermal barrier function in a young healthy Caucasian population.

BACKGROUND: Transepidermal water loss (TEWL), stratum corneum hydration (SCH), and skin surface pH are indicators of skin barrier integrity. There is scant evidence on normative data for cutaneous homeostasis parameters in healthy individuals. OBJECTIVES: To develop normative data for skin erythema, melanin, pH, SCH, and TEWL; identify differences in these variables among different anatomical locations; and explore factors that may modify these values. MATERIAL & METHODS: A cross-sectional study was conducted in 87 healthy volunteers (34 males) aged 20 to 40 years. TEWL, SCH, pH, erythema, and melanin were measured on the cheeks, volar forearms, and palms. RESULTS: The lowest TEWL value corresponded to volar forearms (9.69 ± 2.94 g m-2·h-1) and the highest to palms (49.32 ± 14.55 g m-2·h-1). Erythema was more evident on cheeks than palms or volar forearms (413.51 arbitruary units [AU] vs. 259.98 AU vs. 252.02 AU). The lowest melanin index was documented for palms (92.72 ± 41.70 AU). pH levels were similar among the different locations. The erythema index was significantly higher in males versus females for all locations. Linear regression analysis adjusted for age and SCH revealed an increase in 0.45 ± 0.18 g m-2·h-1 for TEWL on the cheek and 0.32 ± 0.10 g m-2·h-1 for TEWL on the forearm for each one-year increase in age. CONCLUSION: We provide normative data for individuals aged 20-40 years, across three anatomical locations, and propose a predictive model for TEWL on the cheek and forearm as a function of age and SCH.

Clinical Manifestations, Treatment, and Prevention of Acute Irritant Contact Dermatitis Caused by 2,4-Dichloro-5-Methylpyrimidine.

BACKGROUND: There are no reported cases of 2,4-dichloro-5-methylpyrimidine (DCP)-induced irritant contact dermatitis (ICD). OBJECTIVE: The aim of the study was to summarize the clinical features, treatment, and protective measures for DCP-induced ICD. METHODS: We retrospectively reviewed the clinical data from 64 patients with DCP-induced ICD and the protective measures in a DCP manufacturing factory. RESULTS: Disease onset occurred 1 to 10 minutes after DCP single exposure in all 64 patients. The contact site developed edematous erythematous skin lesions with clear boundaries. Other symptoms included a burning sensation (n = 48), pruritus (n = 16), headache (n = 4), nausea/vomiting (n = 3), and syncope (n = 1). Ten patients developed pruritic rash over the whole body 1 to 4 days after contacting DCP. Histopathologic examination of the lesions was performed in 8 patients; all 8 showed manifestations of ICD. A patch test with 1% DCP ethanol solution was performed in 7 patients. One patient withdrew because of pruritus and massive erythema over the whole body. Four patients had a strong reaction, and 2 patients had a very strong reaction. All patients were cured. Positive-pressure inflatable protective clothing protected workers from the outside environment to prevent DCP-induced ICD. CONCLUSIONS: 2,4-Dichloro-5-methylpyrimidine exposure induces acute ICD and a delayed allergic reaction in some patients (15.6%). Positive-pressure inflatable protective clothing prevents DCP-induced ICD.

Prospective Evaluation of Mango Fruit Intake on Facial Wrinkles and Erythema in Postmenopausal Women: A Randomized Clinical Pilot Study.

Mangos are rich in ß-carotene and other carotenoids, along with several phenolic acids that may provide oxidant defense and photoprotection to the skin. The objectives of this study are to investigate the effects of Ataulfo mango intake on the development of facial wrinkles and erythema. A randomized two-group parallel-arm study was conducted to assess 16 weeks of either 85 g or 250 g of mango intake in healthy postmenopausal women with Fitzpatrick skin type II or III. Facial photographs were captured at weeks 0, 8, and 16, and wrinkles at the lateral canthi and erythema at the cheeks were quantified. Skin carotenoid values were measured with reflection spectroscopy. Deep wrinkle severity decreased significantly in the 85 g group after 8 (p = 0.007) and 16 (p = 0.03) weeks compared to baseline measures. In contrast, those in the 250 g group showed an increase after 16 weeks in average wrinkle severity (p = 0.049), average wrinkle length (p = 0.007), fine wrinkle severity (p = 0.02), and emerging wrinkle severity (p = 0.02). Erythema in the cheeks increased with 85 g of mango intake (p = 0.04). The intake of 85 g of mangos reduced wrinkles in fair-skinned postmenopausal women, while an intake of 250 g showed the opposite effect. Further studies feeding 85 g of mangos are warranted.

The Impact of COVID-19 on the Faces of Frontline Healthcare Workers.

As the coronavirus epidemic continues, a host of new cutaneous complications is seen on the faces of frontline healthcare workers wearing personal protective equipment on a daily basis. To minimize the risk of COVID-19 infection, healthcare workers wear tight-fitting masks that lead to an excessive amount of pressure on the facial skin. Mechanical pressure, mask materials, and perspiration can all lead to various types of cutaneous lesions such as indentations of the face, skin tears, post-inflammatory hyperpigmentation, ulceration, crusting, erythema, and infection. The objective of this article is to provide effective and straightforward recommendations to those health care providers using facial masks in order to prevent skin-related complications. J Drugs Dermatol. 2020;19(9):858-864. doi:10.36849/JDD.2020.5259.

ENT manifestation in COVID-19 patients.

OBJECTIVE: to detect, analyze and discuss the different ear nose throat (ENT) manifestations those were reported in COVID19 positive patients in the reviewed and published literatures. METHODS: We performed a search in the PubMed databases, Web of Science, LILACS, MEDLINE, SciELO, and Cochrane Library using the keywords; COVID-19, Novel coronavirus, corona, 2019-nCoV, SARS-CoV-2, ENT, ear, nose, throat, otorhinolaryngology, ORL, pharynx, ORL, smell, larynx, different ENT related symptoms. We reviewed published and peer reviewed studies that reported the ENT manifestations in COVID-19 laboratory-confirmed positive patients. RESULTS: within the included 1773 COVID-19 laboratory-confirmed positive patients, the most common ENT manifestations of COVID-19 were sore throat (11.3%) and headache (10.7%). While the other reported ENT manifestations were pharyngeal erythema (5.3%), nasal congestion (4.1%), runny nose or rhinorrhea (2.1%), upper respiratory tract infection (URTI) (1.9%), and tonsil enlargement (1.3%). CONCLUSION: ENT manifestations for COVID-19 are not common as fever and cough. But, a universal questionnaire using well-defined COVID-19 manifestations is needed to make the COVID-19 data precisely defined, complete and homogenous.

Dosis eritematosa mínima: correlación con el fototipo y método de medición en una muestra de población colombiana / Minimal Erythema Dose: Correlation with Fitzpatrick Skin Type and Concordance Between Methods of Erythema Assessment in a Patient Sample in Colombia

ANTECEDENTES Y OBJETIVO: La determinación de la dosis eritematosa mínima (DEM) es necesaria para el estudio de la fotosensibilidad cutánea, debe determinarse en cada población, dadas las diferencias genéticas y las metodologías utilizadas. El objetivo de este estudio fue determinar la DEM en población colombiana, su correlación con los fototipos y la concordancia de dos alternativas de medición. PACIENTES Y MÉTODOS: Estudio de corte trasversal que incluyó 113 personas en Bogotá (Colombia). Se determinó la DEM para UVA + UVB y UVA utilizando un simulador solar y para UVB de banda estrecha (UVBBE) con una cabina de fototerapia. La evaluación se realizó visualmente y por Mexameter MX(R)-18. RESULTADOS: La mediana de la DEM para UVA+UVB fue de 22 mJ/cm2 para fototipos I y II y de 33 y 43 mJ/cm2 para fototipos III y IV, respectivamente; para UVA fue de 22, 42, 86 y 100 J/cm2 y para UVBBE de 390, 550, 770 y 885 mJ/cm2 (fototiposI-IV, respectivamente). La correlación entre los fototipos y la DEM osciló entre 0,5 y 0,69. El nivel de correlación-concordancia de LIN entre el método visual y el Mexameter fue superior a 0,8 en todos los casos. CONCLUSIONES: Este estudio permitió conocer los valores de DEM para UVA + UVB, UVA y UVBBE para los diferentes fototipos en la población colombiana, y evidenció una correlación muy buena entre los métodos de medición evaluados y una correlación moderada a buena entre la DEM y los fototipos

BACKGROUND AND OBJECTIVE: The minimal erythema dose (MED), an essential measurement in studies of skin photosensitivity, requires establishing MED values for specific populations, given genetic variation. Different ways to assess erythema are also relevant. We aimed to determine MED values in a sample of Colombian patients and correlations between MED and Fitzpatrick skin type. We also studied concordance correlation between MEDs and two alternative ways to assess erythema. PATIENTS AND METHODS: Cross-sectional study of 113 individuals in Bogotá, Colombia. We used a solar simulator to measure UV-A radiation and combined UV-A and UV-B (UVA+UVB) radiation, o se podría suprimir este término porque UVA y UVB son términos conocidos for MED calculation. Narrowband UV-B (NBUVB) radiation was measured in a phototherapy cabin. Erythema was assessed visually and with a Mexameter MX 18 device. RESULTS: The median MEDs of UVA + UVB radiation were 22 mJ/cm2 for Fitzpatrick skin typesI andII, and 33 and 43 mJ/cm2, respectively, for typesIII andIV. The MEDs of UV-A radiation were 22, 42, 86, and 10 0J/cm2 for types I, II, III, and IV, respectively. The MEDs of NBUVB light were 390, 550, 770, and 885 mJ/cm2 for the 4 skin types. The correlation between MEDs and skin types ranged from 0.5 to 0.69. Lin's concordance correlation coefficients between visual and Mexameter assessments of erythema were greater than 0.8 in all cases. CONCLUSION: This study allowed us to understand MED values for UV-A, UVA + UVB, and NBUVB according to different skin types in the Colombian population. Concordance correlation coefficients between the different methods of erythema assessment were very good. Correlations between MEDs and skin types were moderate to good

Use of beta-blockers for rosacea-associated facial erythema and flushing: A systematic review and update on proposed mode of action.

BACKGROUND: Flushing and erythema are frequent skin symptoms in rosacea. Because their adequate treatment remains a clinical challenge, new treatment options are explored, such as oral ß-blockers. OBJECTIVES: To evaluate the efficacy of oral ß-blockers for rosacea-associated facial flushing and erythema. METHODS: PubMed, Embase, Web of Science, and Cochrane Library were systematically searched, including studies providing original data on the efficacy of oral ß-blockers in rosacea patients with facial flushing and/or persistent erythema. Risk of bias was assessed using the Cochrane Risk of Bias tool, Newcastle-Ottawa scale, and Quality in Prognosis Studies tool. RESULTS: Nine studies evaluating the use of carvedilol, propranolol, nadolol, and ß-blockers in general were included. Articles studying carvedilol and propranolol showed a large reduction of erythema and flushing during treatment with a rapid onset of symptom control. Bradycardia and hypotension were the most commonly described adverse events. LIMITATIONS: Most studies had a retrospective design with a small sample size, and outcome measurement was often subjective. CONCLUSIONS: Oral ß-blockers could be an effective treatment option for patients with rosacea with facial erythema and flushing that does not respond to conventional therapy. Larger prospective trials with objective outcome assessment are needed to validate the promising results of these studies.

Paraneoplastic Dermatoses: A Brief General Review and an Extensive Analysis of Paraneoplastic Pemphigus and Paraneoplastic Dermatomyositis.

Skin manifestations of systemic disease and malignancy are extremely polymorphous. Clinicians should be familiarized with paraneoplastic dermatoses in order to perform an early diagnosis of the underlying neoplasm. Lack of familiarity with cutaneous clues of internal malignancy may delay diagnosis and treatment of cancer. In this review, we described several paraneoplastic dermatoses and discussed extensively two paradigmatic ones, namely paraneoplastic pemphigus and paraneoplastic dermatomyositis.

Erythema of the skin after breast radiotherapy: It is not always recurrence.

Recurrence of breast cancer is a predominant fear for patients who were treated for breast cancer. Acute and late dermatologic effects of radiotherapy are not uncommon and could have similar characteristics to breast cancer recurrence. Thus, it is important to highlight key differences between the clinical and histologic presentations of radiation effects and recurrence. Herein, we present two patients who presented with late dermatologic effects of radiotherapy months to years after treatment, neither of whom had workup consistent with cancer recurrence. We provide clinical and microscopic descriptions of each case and provide a review to differentiate various dermatologic conditions. This report aims to outline potential late dermatologic effects of radiation treatment and emphasise that changes in the breast do not always signal breast cancer recurrence.

Cervical lymphadenopathy in children: a diagnostic tree analysis model based on ultrasonographic and clinical findings.

OBJECTIVES: To establish a diagnostic tree analysis (DTA) model based on ultrasonography (US) findings and clinical characteristics for differential diagnosis of common causes of cervical lymphadenopathy in children. METHODS: A total of 242 patients (131 boys, 111 girls; mean age, 11.2 ± 0.3 years; range, 1 month-18 years) with pathologically confirmed Kikuchi disease (n = 127), reactive hyperplasia (n = 64), lymphoma (n = 24), or suppurative lymphadenitis (n = 27) who underwent neck US were included. US images were retrospectively reviewed to assess lymph node (LN) characteristics, and clinical information was collected from patient records. DTA models were created using a classification and regression tree algorithm on the basis of US imaging and clinical findings. The patients were randomly divided into training (70%, 170/242) and validation (30%, 72/242) datasets to assess the diagnostic performance of the DTA models. RESULTS: In the DTA model based on all predictors, perinodal fat hyperechogenicity, LN echogenicity, and short diameter of the largest LN were significant predictors for differential diagnosis of cervical lymphadenopathy (overall accuracy, 85.3% and 83.3% in the training and validation datasets). In the model based on categorical parameters alone, perinodal fat hyperechogenicity, LN echogenicity, and loss of fatty hilum were significant predictors (overall accuracy, 84.7% and 86.1% in the training and validation datasets). CONCLUSIONS: Perinodal fat hyperechogenicity, heterogeneous echotexture, short diameter of the largest LN, and loss of fatty hilum were significant US findings in the DTA for differential diagnosis of cervical lymphadenopathy in children. KEY POINTS: • Diagnostic tree analysis model based on ultrasonography and clinical findings would be helpful in differential diagnosis of pediatric cervical lymphadenopathy. • Significant predictors were perinodal fat hyperechogenicity, heterogeneous echotexture, short diameter of the largest LN, and loss of fatty hilum.

Changes of coagulation parameters during erythema marginatum in patients with hereditary angioedema.

BACKGROUND: Hereditary angioedema (HAE) with C1-inhibitor deficiency (C1-INH-HAE) is characterized by recurrent episodes of subcutaneous/submucosal edema, which may be preceded by erythema marginatum (EM) as a prodromal symptom. Our aim was to analyze the changes occurring in the parameters of the coagulation system during the development of EM and HAE attacks. MATERIALS AND METHODS: Eight C1-INH-HAE patients (1 male, 7 females, median age: 41.7 years) were studied. Blood samples were obtained from all patients (during symptom-free periods, EM, and HAE attacks), as well as from 20 sex- and age-matched healthy controls. Prothrombin time (PT), activated partial thromboplastin time (aPTT), fibrinogen, D-dimer, Factor V, Factor VII, Factor X, Factor XI, and Factor XII levels were measured. RESULTS: D-dimer levels were significantly lower, whereas aPTT was significantly prolonged in healthy controls vs. the values measured during the symptom-free period (p = 0.0497; p = 0.0043), in the presence of EM (p = 0.002; p = 0.0002), or during HAE attacks (p < 0.0001; p = 0.0002). We observed the following differences between samples taken during HAE attacks vs. in symptom-free periods: D-dimer levels were significantly elevated (p = 0.0391), while aPTT was significantly shorter during HAE attacks (p = 0.0159). D-dimer levels were significantly higher during EM than in symptom-free periods (p = 0.0078). Comparing the samples drawn during EM or during HAE attacks, there were no significant differences in the study parameters. CONCLUSIONS: D-dimer levels were elevated during EM and this suggests that EM may be part of the HAE attack. Nevertheless, further research into the complement and kinin-kallikrein systems is needed in more patients for a better understanding of the pathomechanism of EM.

Breast tuberculosis in East London: A 13-year retrospective observational study.

SETTING: Breast tuberculosis (TB) is rare in Western Europe, and its diagnosis may be delayed through lack of awareness of presenting features. Our institution serves a large East London population with a high incidence of TB. OBJECTIVE: To characterize presenting features and avoidable diagnostic delay in breast TB patients. DESIGN: We conducted a 13-year retrospective study of breast TB patients treated at our institution including demographic, clinical, microbiology, and pathology data. RESULTS: Forty-seven cases were included; 44 (94%) were female, with a median age of 33 years (IQR 28.5-39.5). The main presenting feature was a breast lump in 41 cases (87%); which were predominantly solitary unilateral lesions (25, 61%) and frequently located in the upper outer quadrant (28, 68%). Where performed, Mycobacterium tuberculosis was cultured in 15/36 (42%) cases. Granulomata were present on biopsy or aspirate in 21 (47%) and 17 (36%) cases, respectively. The median duration between symptom onset and treatment was 20 weeks (IQR 15-30). Forty-six (98%) completed treatment successfully and one relapsed. CONCLUSION: A high index of suspicion for TB is required for individuals presenting with breast symptoms from countries where TB is endemic. Development of standardized pathways may improve detection and management of breast TB may reduce diagnostic delay.

A quantitative study of hydration level of the skin surface and erythema on conventional and microclimate management capable mattresses and hospital beds.

BACKGROUND: In addition to pressure itself, microclimate factors are gaining more attention in the understanding of the development of pressure ulcers. While there are already various products to reduce pressure on sore-prone areas to prevent pressure ulcers, there are only a few mattresses/hospital beds that actively influence skin microclimate. In this study, we investigated if microclimate management capable mattresses/hospital beds can influence skin hydration and skin redness/erythema. METHODS: We included 25 healthy subjects in our study. Measurements were made using Courage & Khazaka Multi Probe Adapter MPA with Corneometer CM825 and Mexameter MX18 to determine skin hydration of the stratum corneum and skin redness/erythema before and after the subjects were lying in conventional (Viskolastic® Plus, Wulff Med Tec GmbH, Fedderingen, Germany and Duo™ 2 mattress, Hill-Rom GmbH Essen, Germany) or microclimate management capable mattresses/hospital beds (ClinActiv + MCM™ and PEARLS AFT, Hill-Rom GmbH Essen, Germany). RESULTS: While there was no difference in skin redness/erythema on the different mattresses/hospital beds, skin hydration of the stratum corneum decreased significantly in an air fluidized bed compared to baseline values and values measured on standard mattress/Viskolastic® Plus. CONCLUSION: Air-fluidized therapy reduces skin hydration and therefore could contribute to prevent moisture associated ulcers. Changes in skin hydration as one important factor of skin microclimate can be detected after a short time of incubation and even before an erythema appears.

An erythematous facial rash.

Two months of treatment with doxycycline provided no improvement. A biopsy of the patient's cheek led to a proper diagnosis.