Laser hair removal complications and the associated risk factors at a tertiary dermatology center: a case-control study.

Laser hair removal (LHR) has been established as a safe and efficient method for eliminating unwanted hair. This study aimed to investigate the frequency of LHR complications and assess the contributing factors. During one year, 16,900 patients undergoing LHR therapy were evaluated for complications. For each case, two external controls were selected (matched based on age, sex, Fitzpatrick skin type (FST) III-IV, and the treated anatomical region). To assess the impact of anatomical region on complication occurrence, each patient was used as their internal control if another area was treated during the same session. GEE analysis was used for statistical analysis.The incidence of LHR complications was calculated to be 0.69%. The most common complications were petechia, purpura, and ecchymosis (31.66%) followed by pigmentation changes (20.0%). LHR complications were most commonly observed in the lower limbs (32.0%), face and neck (23.3%), and genitalia and thighs (22.3%), respectively. Possible risk factors were younger age (OR = 0.74, P-value ≤ 0.001), operating LHR in the head and neck (OR = 5.8, P-value = 0.022), utilization of the alexandrite laser (OR = 2.32, P-value = 0.011), and fluence in the Alexandrite laser (OR = 3.47, P-value = 0.003).Overall, the results of this study indicate that LHR is generally a safe method for removing unwanted hair. However, factors such as younger age, treatment of the facial area, and use of the alexandrite laser especially with higher fluence levels in patients with FST III-IV were identified as potential risk factors.

Role of imaging in morphea assessment: A review of the literature.

BACKGROUND: Localized scleroderma, known as morphea, is a connective tissue disorder characterized by inflammation and fibrosis of the skin and the soft tissue. There exist no universally accepted validated outcome measures in order to monitor the disease activity. Besides clinical scores to evaluate outcome measures, imaging modalities are increasingly utilized in assessing patients with morphea, such as high-frequency ultrasonography (US), shear-wave elastography (SWE), and magnetic resonance imaging (MRI). However, the accuracy of these imaging modalities in monitoring morphea activity is not yet clear. AIMS: To review the literature regarding the role of imaging modalities in assessing patients with morphea. MATERIALS & METHODS: In this study, we searched the PubMed/Medline database for articles published from inception until February 2023. RESULTS: A total number of 23 original articles in three categories of US, elastography, and MRI were included. DISCUSSION: Regarding US, criteria, including increased dermal thickness, increased echogenicity of the subcutaneous tissue, and decreased dermal echogenicity, were indicators of active morphea lesions when using high frequencies probe (18-20 MHz) color Doppler sonography. Moreover, studies evaluating SWE, a novel method to quantitatively assess tissue stiffness, demonstrated increased dermal stiffness in active lesions. CONCLUSION: Studies showed that MRI can help to determine the depth of disease, particularly as a first-line and follow-up diagnostic tool, especially in generalized and deep morphea. In addition, brain MRI may be useful for patients with localized craniofacial scleroderma experiencing new or worsening neurological symptoms.

Dermoscopy of cutaneous granulomatous disorders: A study of 107 cases.

BACKGROUND: Cutaneous granulomatous disorders (CGDs) can share some features, but an accurate assessment of various findings and their pattern can be useful in differentiating them. In addition to common dermoscopic findings for CGDs, some peculiar dermoscopic characteristics can be helpful in distinguishing them. OBJECTIVE: Herein, we aimed to evaluate dermoscopic findings in patients with CGDs and determine the dermoscopic criteria that could suggest the type of granulomatous disorder. MATERIAL AND METHODS: A total of 107 cases including 75 (70.09%) males and 32 (29.90%) females with an established diagnosis of cutaneous leishmaniasis (n = 49), cutaneous sarcoidosis (n = 23), granuloma annulare (GA) (n = 18), and tattoo granuloma (n = 17) confirmed by clinical and pathological studies were included. Based on the previous studies available in the literature, we wrote a checklist containing dermoscopic features of CGDs. Afterward, two dermatologists independently reviewed all dermoscopic images for the presence or absence of each item on the checklist. Descriptive analysis, fisher exact, chi-square, and t-test were used. The granulomatous disorders with larger sample sizes were selected for further analysis, including the univariate and conditional multivariate logistic regressions. RESULTS: The most prevalent nonvascular findings in all of our CGD patients were white scaling (N = 67%, 62.61%), diffuse or localized orange structureless areas (N = 53%, 49.53%), and diffuse erythema (N = 48%, 44.85%). Furthermore, the most frequent vascular findings in all of our CGD cases were branching and arborizing vessels (N = 30%, 28.03%), linear irregular (N = 30%, 28.03%), and dotted vessels (N = 27%, 25.23%). CONCLUSION: For differentiating leishmaniasis from sarcoidosis by dermoscopy, white scaling and white scarring areas are more suggestive of cutaneous leishmaniasis, whereas the presence of arborizing vessels would be more in favor of sarcoidosis. When comparing GA to cutaneous leishmaniasis, the latter significantly shows more linear irregular vessels, hairpin vessels, white scaling, and white scarring areas. In the case of differentiating sarcoidosis from GA, the presence of hairpin vessels would be suggestive of sarcoidosis.

Comparing the efficacy of plasma exeresis and cryotherapy for the treatment of seborrheic keratosis: A randomized controlled trial.

BACKGROUND: Seborrheic keratoses (SK) is a benign epithelial skin tumor and plasma exeresis is a new technique. AIMS: To compare the efficacy and safety of plasma exeresis and cryotherapy for treating SK. METHODS: This study is a randomized controlled trial (RCT). One side of each patient was randomly treated with plasma exeresis (peak-to-peak voltage of 3.44 kV and a frequency of 62.5 kHz) and the other side with cryotherapy. RESULTS: Thirty-five males were enrolled. At week 3, 37.1 % (N = 13) of lesions treated by plasma exeresis were clear, which was higher than those treated by cryotherapy 17.1% (N = 6). However, this difference was not significant (p-value: 0.06). At week 6, 16 (57.1 %) out of 28 remaining lesions, treated by plasma exeresis were clear, which was significantly higher (p-value: 0.005) than those completely cleared by cryotherapy in 6 out of 29 remaining lesions (20.7%). The mean physician assessment scale score was significantly reduced in both groups in the second follow-up (plasma group first follow-up 0.91 ± 0.89 vs. second follow-up 0.5 ± 0.64 and p-value: 0.0031; cryo group first follow-up 1.4 ± 0.84 vs. second follow-up 1.1 ± 0.72 and p-value: 0.0002). Regarding side effects, no significant difference was seen (p = 0.438). The most common complications in the plasma and cryotherapy groups were erythema (10/19, 52.63%) and hypo pigmentation (5/13, 38.46%). CONCLUSIONS: Both cryotherapy and plasma exeresis are effective. We observed a significantly higher cleared lesions treated with plasma exeresis in 6 weeks and after two sessions.

Drug-induced cutaneous pseudolymphoma: A systematic review of the literature.

Drug-induced cutaneous pseudolymphoma (CPL) is a common form of pseudolymphoma and there are numerous drugs associated with it. In this study, we performed a systematic review of the literature by searching PubMed/Medline and Embase databases to determine the most common drugs responsible for CPL and to define the demographic, clinical, histopathological and immunopathological characteristics of patients (updated on 30 December 2020). From 883 initially found articles, 56 studies (89 reported cases) were included. The mean age of patients was 54.4 ± 17.7 (ranging 8-86) years, and 46 (51.7%) were men. The median time interval between drug intake and CPL occurrence was 120 days (range 1-7300 days). The shortest median time interval between taking the drug and the onset of the disease was observed among patients taking antidepressants (60 days) (range 7-540) and the longest median time interval was observed in individuals using immunomodulators (300 days) (range 3-7300). The most-reported drug categories causing CPL were anti-hypertensives (17.9%), anticonvulsants (14.6%), monoclonal antibodies (13.4%) and antidepressants (11.2%). Moreover, the most common drugs were phenytoin (6.7%), amlodipine (5.6%), fluoxetine (5.6%) and carbamazepine (4.4%). Histopathological evaluation of 76 cases revealed 62 (81.5%) reports of T-cell infiltrations. Furthermore, positive reports of CD4 (94.0%), CD8 (93.0%) and CD30 (87.5%) were noted. The lowest prevalence of CD30-positive reports was observed among monoclonal antibodies. In conclusion, anti-hypertensives, anti-convulsants, monoclonal antibodies and anti-depressants are the most common drugs responsible for CPL. It mostly presents in middle-aged patients with almost no gender difference as pruritic papules, nodules and plaques.

Topical care in pemphigus wounds: A systematic review of the literature.

Pemphigus is a group of autoimmune blistering diseases. Given the ulcerative nature of the diseases, the full healing of ulcers and erosions might be challenging. The aim of this study was to determine various topical wound care options for pemphigus patients, the advantage of each alternative, and to compare their efficacy, safety, and feasibility. In accordance with PRISMA guideline, we performed a systematic search in PubMed/Medline, web of science, and Scopus databases for articles published from inception until February 2, 2022. Out of 703 initially retrieved articles, 11 full texts were included. Our findings were divided into the following categories: silver-containing dressings, paraffin-embedded tulle nets, topical insulin, EPIFIBROIN 0039, platelet gel, and Biobrane®. The most commonly used topical care in pemphigus patients was silver-containing dressings in six studies. All of the included studies reported acceptable outcomes without any severe adverse effects. Due to the few available studies in this field, a definite suggestion cannot be made. We recommend larger randomized controlled studies to identify the best topical care modality in pemphigus patients.

Cutaneous manifestations following COVID-19 vaccination: A report of 25 cases.

Various adverse effects particularly cutaneous manifestations associated with different COVID-19 vaccines have been observed in practice. The aim of our study was to evaluate all patients who presented to our tertiary center with skin manifestations following COVID-19 vaccines injection from September to December 2021. All patients with skin manifestation within 30 days or less following COVID-19 vaccination were enrolled in our case-series. All cases included in our study were diagnosed based on clinical and/or histopathological evaluation and all other possible differential diagnoses were ruled out. Twenty-five individuals including 16 (64%) males and 9 (36%) females with the mean age of 47 ± 17.62 years (range 18-91) were enrolled in our study. Twenty-two (88%) patients developed lesions after Sinopharm vaccine injection and 3 (12%) cases manifested lesions after the AstraZeneca vaccine. Six (24%) patients developed new-onset lichen planus (LP) and 1 (4%) patient manifested LP flare-up. Two (8%) individuals developed psoriasis and 1 (4%) case showed psoriasis exacerbation. One (4%) patient developed new-onset pemphigus vulgaris (PV) and 1 (4%) case experienced a flare of PV lesions. One (4%) patient manifested pityriasis lichenoides et varioliformis acuta (PLEVA) flare-up. Other new-onset cases were as follows: toxic epidermal necrolysis (TEN) (n = 1, 4%), bullous pemphigoid (BP) (n = 2, 8%), alopecia areata (AA) (n = 2, 8%), pytriasis rosea (n = 1, 4%), herpes zoster (n = 1, 4%), cutaneous small vessel vasculitis (n = 1, 4%), erythema multiform (EM) and urticaria (n = 3, 12%), and morphea (n = 1, 4%). Physicians should be aware of the possible side effects especially cutaneous manifestations associated with COVID-19 vaccines.

Multiple dermatofibromas, associated clinical and histological characteristics: A systematic review.

Multiple dermatofibromas (DFs) are rare benign fibrohistiocytic lesions characterized by asymptomatic hyperpigmented nodules. Several diseases, like systemic lupus erythematosus (SLE) and human immunodeficiency virus (HIV) infection, are found to be associated with multiple DFs. Here, we designed a systematic review by an electronic search of PubMed and Embase databases to select case reports of multiple DFs (29 May 2021). From 2,145 initially found articles, 96 studies (106 cases) were included. We classified multiple DFs (>1 DF lesion) into four subtypes and separately investigated clinical characteristics of each one: multiple eruptive DFs (MEDFs) (n = 45), multiple (n = 41), multiple clustered DFs (MCDFs) (n = 18), and giant combined (n = 2). The patients' mean age was 38.3 ± 14.7 years. The majority were female (61.3 %). The lesions were commonly on the trunk and extremities (36.8 %). MEDFs (n = 36) had the most rapid disease onset (2.0 ± 6.6 years). Immunosuppression induced by either HIV (10.3 %) and hematologic malignancy (9.4 %) or immunosuppressive drugs (23.4 %) along with SLE (19.8 %) were the most observed associations. However, 66.7 % of the MCDF patients were otherwise healthy individuals. As for disease management, surgery and follow-up were the preferred options. Most of the cases showed neither resolution nor development of new lesions in follow-up.

Is the severity of initial sensitization to diphenylcyclopropenone in alopecia areata patients predictive of the final clinical response?

Immunotherapy by diphenylcyclopropenone (DPCP) is generally started with 2% DPCP sensitization, however in recent years studies have questioned the necessity of sensitization that may cause patients severe reactions and troubles at the onset of therapy. The purpose of the present study was to evaluate the association between the severity of initial reaction to 2% DPCP sensitization in AA patients and clinical response. In this retrospective study, 110 AA patients who continued therapy for at least 6 months were enrolled. Hair loss and hair regrowth rates were calculated based on the Severity of Alopecia Tool (SALT) scoring system. Initial reaction to 2% DPCP sensitization after 2 weeks was graded as negative reaction (absence of any reaction), doubtful reaction (mild erythema, pruritus, and irritation for minutes after test), weak (erythema, mild edema, and scaling), and strong to extreme reaction (vesicles, bullae, ulcer, and discharge). The degrees of the initial reaction to 2% DPCP after 2 weeks were negative reaction 13 (11.81%), doubtful reaction 40 (36.36%), weak reaction 33 (30%), and strong to extreme reaction 24 (21.81%). Patients were divided into two groups: (A) patients with less than 12-month therapy (75 of 110), (B) patients with more than 12-month therapy (35 of 110). Initial reaction to 2% DPCP sensitization was not correlated with hair regrowth rate in either group (group A: Spearman's rho = 0.194, p = 0.095; group B: Spearman's rho = 0.063 p = 0.720). After 12-month treatment with DPCP, hair regrowth rate was significantly greater than 6-months therapy (group A: 17.03 ± 37.78, group B: 49.26 ± 36.34; p = 0.003). The severity of hair loss at the onset of treatment was significantly associated with the response rate in both groups (p-value <0.002). Based on our results, it is the initial severity of the disease and not the initial reaction to 2% DPCP sensitization that predicts the clinical response to DPCP immunotherapy.

The evaluation of efficacy of atmospheric pressure plasma in diabetic ulcers healing: A randomized clinical trial.

The aim of this study is to evaluate the efficacy and safety of cold atmospheric plasma (CAP) as a novel therapy for diabetic foot ulcers. This was an investigator-blinded, randomized controlled trial of 14 weeks (6 weeks of treatment and 8 weeks of follow-up). Twenty patients with diabetic foot ulcers were divided into two groups: the control group receiving standard wound care and the plasma group, which received CAP twice a week for six consecutive weeks in addition to standard wound care. The ulcer size, amount of exudate, and wound grading were determined weekly. Cold plasma was produced by applying a high voltage (4.5 kV) and a high frequency (22 kHz) to helium gas. Exudate from wounds treated with CAP showed a significant reduction in the third week after complete treatment (p = 0.039). The wound grading of the ulcers improved by the sixth week (p = 0.019), and the sizes of ulcers significantly decreased in the plasma group at the end of the treatment period (p = 0.007). In this randomized clinical trial, CAP was an effective treatment option for diabetic foot ulcers in terms of wound surface reduction and antibacterial effects.

A systematic review on efficacy, safety, and treatment-durability of low-dose rituximab for the treatment of Pemphigus: special focus on COVID-19 pandemic concerns.

BACKGROUND: Rituximab is a FDA-approved monoclonal antibody for adults with moderate to severe potentially life-threatening pemphigus vulgaris. Recent studies have focused on assessments of efficacy and safety of low-dose rituximab (<2 gram in each cycle). METHOD: Databases were searched from 2010 to 2020 (last update: 1 June 2020). RESULT: Nine studies were entered; including180 cases (92: women, 88: men, age range: 9-83 years). The dosages of each Rituximab cycle varied between ultra-low-dose (≤500 mg for a cycle, either multiple infusions or a single infusion), low-dose (2 × 375 mg/m2 or 2 × 500 mg) and modified-dose (3 × 375 mg/m2 or 3 × 500 mg). The efficacy and safety of Rituximab in the studies are known by the recovery time, relapse time, and side events. According to the studies, 2 × 500 can lead to complete remission in a broad range, from 35 to 82%. These differences might be explained by different end-points and variable cumulative corticosteroid dosage after RTX administration. Although the studies showed that low dose RTX is efficient, there are some controversies regarding the choosing low-dose for severe patients. CONCLUSION: Considering the effectiveness of low-dose, intermediate dose, and ultra-low-dose protocols of Rituximab in inducing remission in pemphigus disease and considering factors such as cost of therapy, and the need to induce a minimum of immunosuppression for a minimum duration in the COVID-19 pandemic, suggested to use low-dose Rituximab protocol (2 infusions of 500 mg Rituximab: interval of 2 weeks) to induce the remission in mild-to-moderate pemphigus patients.

Evaluating the Persian versions of two psoriatic arthritis screening questionnaires early arthritis for psoriatic patients questionnaire (EARP) and psoriasis epidemiology screening tool (PEST) in Iranian psoriatic patients

Background/aim: The majority of psoriatic arthritis (PsA) patients present at dermatology clinics with cutaneous psoriasis up to 10 years prior to arthritis onset; therefore, applying a suitable screening tool to detect PsA early is essential for dermatologists. This study aimed to validate and evaluate the Persian version of two PsA screening questionnaires, the early arthritis for psoriatic patients questionnaire (EARP) and the psoriasis epidemiology screening tool (PEST) in Iranian psoriatic patients. Materials and methods: In this cross-sectional study, psoriatic patients who presented to the dermatology clinic without a previously established PsA were asked to fill out the Persian version of EARP and PEST. PsA was diagnosed by a rheumatologist based on the fulfillment of the classification criteria for psoriatic arthritis. Receiver operator characteristic (ROC) curves, sensitivity, and specificity were calculated for both questionnaires. Results: A total of 75 patients (33 [44%] female, 42 [56%] male, with a mean age of 43.2 ± 14.6) were enrolled in the study. The prevalence of PsA based on rheumatologist diagnosis was 25.3% (19 patients had PsA). The ROC curve analysis of EARP and PEST were 0.949 (95% CI: 0.897­1) and 0.922 (95% CI: 0.834­1). The sensitivity of EARP and PEST questionnaires was 94.7% and 58%, respectively, while the specificity was 78.6% and 96.4%, respectively, with a cut-off of 3. Conclusion: The Persian version of both questionnaires showed good performance. We suggest EARP as a screening tool for PsA in the dermatology clinics due to much higher sensitivity with acceptable specificity compared to PEST.

Successful treatment of a patient with multicolored nevus of Ota using a combination of 1064 and 532 nm Q-switched Nd:YAG lasers.

Nevus of Ota (NO) is a hamartoma of dermal melanocytes usually presents as unilateral blue, gray or brown macules or patches. It can impose a high burden of cosmetic and psychological disturbances in affected individuals. Q-Switched lasers appear to be an effective treatment for this kind of dermal melanocytosis. Multicolored Ota nevus is a rare variant of this kind of nevus and its treatment may be more challenging compared with unicolor lesions. Herein we report a 21-year-old woman with a multicolored nevus of Ota (blue and brown), which showed a dramatic response to a combination of 1,064 nm and 532 nm Q-Switched Nd:YAG lasers. We also discuss different aspects of the Q-switched laser application of Ota nevus treatment. We also focus on laser combination therapy to treat the nevus of Ota.

Self-limited acne agminate-like granulomatous reaction to facial laser rejuvenation in a patient with comedonal acne vulgaris.

Minimally invasive fractional rejuvenation was developed to overcome the drawbacks of the traditional ablative laser. The Fotona 4D laser is one of these lasers used for face lifting. This laser uses two wavelengths such as Nd-YAG 1064 and Er-YAG 2940 nm in four different modes of non-ablative and ablative fractional laser to induce bulk heating in different tissue layers of facial skin. Although the overall rate of fractional laser complications is much lower than that of traditional techniques, recent studies have shown that fractional lasers can cause complications such as acne, milia, prolonged erythema, infections, and pigmentary alterations.In this report, we present a very unique case of a 41-year-old female patient with mild comedonal acne who developed severe acne agminate-like granulomatous reaction following fractional rejuvenation laser therapy that resolved spontaneously within 2 months after laser therapy. To the best of our knowledge, this is the first case of acne agminate as a side effect of rejuvenation laser therapy.As ruptured hair follicles are proposed as a pathogenic factor in both acne agminate and developing acne following fractional laser therapies, it is recommended to cautiously use resurfacing fractional lasers or to thoroughly treat acne before laser therapy due to the risk of developing a granulomatous reaction.

Skin Cancer Awareness and Sun Protection Behavior Before and Following Treatment Among Skin Cancer-Treated Patients.

There is little known about illness perception in patients with skin tumors. We conducted this study to investigate Iranian patients' understanding of skin tumors, and to evaluate their sun-protective behavior changes after treatment of skin cancer. Patients with a skin biopsy of basal cell carcinoma were asked to complete questionnaires. A total of 110 patients were enrolled in the study. Patients were mostly referred to our tumor clinic from rural areas. At the skin cancer perception investigation, 63% of patients did not consider their disease as a long-lasting situation. Besides, 45.4% of patients consider their illness as a serious condition which significantly affecting their lives. Our patients had a strong belief in treatment control (81%) and 81% of them also described worries about their skin cancer. The leading causes of skin cancer as assumed by patients were: history of skin cancer (37.4%), poor medical care in the past (36.4%), extreme sun exposure (31.5%), and lack of sun protection (27.5%). In regard to sun-protective behavior after treatment of skin cancer, 55.4% of patients showed no changes or even negative change in their sun-protective behavior, But 44.5% of the patients changed their sun-protective behavior in a positive way which was statically significant (P ≤ 0.001). Our study demonstrates how our patients with skin cancer perceive their disease and we need to educate our patients, considering diseases' aspects, causes and symptoms. This is of great value as dermatologists should be aware of patients' perceptions of their disease in order to improve patients' knowledge through educating more about different aspects of disease.

The association between ST18 gene polymorphism and severe pemphigus disease among Iranian population.

Recently, ST18 polymorphism has played a role in increasing the risk of pemphigus among some populations such as Egyptian and Jewish. In addition, a variant within the ST18 promoter gene was shown to induce ST18 upregulation and cytokine secretion leading to keratinocyte susceptibility to anti-desmoglein antibodies. Thus, the present study aimed to assess the ST18 single nucleotide polymorphisms (SNP) relationship with pemphigus, disease severity and family history among Iranian population. A total of 111 pemphigus patients and 201 healthy controls were genotyped for three ST18 SNPs rs2304365, rs10504140 and rs4074067 by using TETRA-ARMS PCR method. The results indicated that risk allele A in rs2304365 was significantly higher in pemphigus patients, compared with the amount in the control group (OR = 2.43 CI = 1.49-3.975, P < 0.001). Thus, A allele represents a risk factor for pemphigus. Further, the patients carrying the risk allele had a more severe disease and a higher age of disease onset while no relationship was observed between the number of relapses and positive family history of pemphigus with the risk allele. Finally, dominant model was regarded as the strongest inheritance model for the associated risk. The present study confirmed the relationship between ST18 gene with pemphigus disease, a more severe disease, and a higher age of disease onset.