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Intravascular lymphomatosis (IVL) is a rare type of B-cell non-Hodgkin lymphoma (BCNHL), which can mimic many other diseases. Fever, neurological symptoms, and skin findings are the most frequent clinical findings. Intravascular lymphomatosis may be associated with genetic factors and infection with human immunodeficiency virus (HIV), human herpesvirus 8 (HHV-8), human T-lymphotropic virus 1 (HTLV1), Epstein-Barr virus (EBV), and hepatitis B virus (HBV). A 50-year-old man was hospitalized with recalcitrant hyponatremia of unknown cause. He had also telangiectatic, indurated, slightly erythematous plaques on his trunk for the last 10 days. His past medical history was unremarkable, although he was a carrier of hepatitis B. Multiple skin biopsies were performed and were considered to be diagnostic of IVL. The hyponatremia was unresponsive to water restriction and hypertonic solution support but it resolved with B cell directed chemotherapy. A final diagnosis was made as syndrome of inappropriate antidiuretic hormone (SIADH) in the setting of IVL. This case had a relatively early diagnosis with just 10-days of skin lesions. Intravascular lymphomatosis is a very rare disease and is usually difficult to diagnose. An even more uncommon presentation is IVL complicated by a paraneoplastic syndrome. There are prior reported cases of SIADH in the setting of IVL. However, this case underscores the importance of evaluating patients with SIADH for potential IVL.

Angiolymphoid hyperplasia with eosinophilia (ALHE) is a rare, benign vascular tumor. Although its etiology is not clearly known, infection, hormonal factors, and trauma are the suspected reasons. There are few cases considered to be related to pregnancy described in the literature. Granulomas are rarely seen in the histopathology and only four patients with granulomas have been described. Herein, we will present a 28-year-old woman who has been pregnant three times; in every pregnancy, she developed pink nodular lesions on the back of her ear. In the first two pregnancies, the lesions had appeared during the pregnancy and regressed completely in the postpartum period. In her third pregnancy, the condition emerged again and lasted 1.5 years after birth of her child. Histopathology exhibited ALHE with granulomas. Although the relationship between ALHE and pregnancy is already known, there are few cutaneous ALHE cases associated with pregnancy reported in the literature. This association is further supported by this case having recurrent ALHE during each pregnancy period. Also, the presence of naked granuloma in histopathology, unlike most of the cases, contributes to the current histopathological data.

Background: Polycaprolactone (PCL) is a semi–permanent filler stimulating neocollagenesis. Lidocaine is frequently used to reduce the pain and, however, may have negative effects on collagen. It was aimed to compare the histological changes on rat skin and efficacies of PCL filler and lidocaine addition. Objective: In this study, results of PCL and PCL+Lidocaine application on rat skin were compared using hematoxylin–eosin (H&E) staining, Masson's trichrome (MT) staining, and electron microscope (EM). Methods: A total of 30 adult female rats were divided into three groups: the control group, the PCL group, and the PCL+Lidocaine group. The tissue samples taken at months 2 and 4 were examined using H&E, MT, and EM. Results: At month 2, dermis thickness, fibroblast count, and collagen fiber diameter increased similarly in the PCL and PCL+Lidocaine groups. Collagen fiber diameter was significantly higher in the PCL group than in the PCL+Lidocaine (p:0.016) and control groups (p:0.009). At month 4, no significant difference was detected between the PCL and PCL+Lidocaine groups in terms of fibroblast count, collagen fiber count, and collagen fiber diameter; dermis thickness was lower in the PCL+Lidocaine group at month 4 (p < 0.46). Dermis thickness, fibroblast count, collagen fiber count, and collagen fiber diameter were found to be significantly lower than in the PCL and PCL+Lidocaine groups. Conclusions: Our study showed that lidocaine addition to PCL filler does not affect the efficacy of the filler and PCL filler stimulates neocollagenesis. [ABSTRACT FROM AUTHOR]

Background: Although many laser systems have been used in the treatment for Poikiloderma of Civatte (POC), there is no standard treatment guideline. Objectives: We aimed to present our data on the efficacy and safety of single‐session pro‐yellow laser treatment for POC. Methods: The study included 14 patients treated with pro‐yellow laser (QuadroStarPRO YELLOW® Asclepion Laser Technologies, Germany) between 2017 and 2019. Treatment had been applied in two passes during the same session; a general pass with 22 j/cm2 over the whole lesion, then, one more pass only on the telangiectatic lesions with 18 j/cm2 fluence. They were evaluated based on their pictures taken before and 4 weeks after the treatment and scored by a 4‐item scoring in terms of the improvement (0:no change, 1:1%–25% mild, 2:26%–50% moderate, 3:51%–75% well, and 4:76%–100% excellent improvement). Results: The mean age of the patients (1 female, 13 males) was 59.64 ± 8.16 years. Five patients had Fitzpatrick‐2 and 9 patients had Fitzpatrick‐3 skin types. Six patients had mild, 8 patients had moderate improvement, one of them has been illustrated in Figure 1. Sixty‐minute mild erythema was the only adverse effect observed. Conclusions: We think that pro‐yellow laser is a good treatment option for POC treatment. Repeated sessions are required for the complete healing of the lesions, while one single session has proved to be deficient. We observed that it was a quite safe treatment option, especially for the neck region, which was inclined to scarring and atrophy development. [ABSTRACT FROM AUTHOR]

Erythema and scarring are among the most common complications of severe inflammatory acne. In this study, we aimed to share our experience with pro‐yellow laser and document the efficacy and safety of this treatment in postacne erythema and scarring. The study included 40 patients, 24 (60%) females, and 16 (40%) males with a mean age of 29.5 ± 8.16 (min. 18 years, max. 57 years). The pro‐yellow laser was applied to all patients as a single session with irradiation of 22 J/cm2. Improvement in postacne erythema and scars were evaluated after the treatment. The study included 40 patients, 24 patients (60%) were females and 16 patients (40%) were males with the mean age of 29.5 ± 8.16 (ranged between 18 and 57 years old). A total of 21 patients (52.5%) had good improvement (51%‐75% regression), 10 patients (25%) had excellent improvement (76%‐100% regression), and a moderate improvement (26%‐50%) was detected in 9 patients (22.5%). Also, there were mild improvement (1%‐25%) in 20 patients (76.9%) and a moderate improvement (26%‐50%) in 6 patients (23.1%). We found that pro‐yellow laser is highly effective in the treatment of postacne erythema, while its effectiveness was mild to moderate in atrophic acne scars. Also, it has been observed that the pro‐yellow laser system can be used safely immediately after cessation of systemic isotretinoin treatment. [ABSTRACT FROM AUTHOR]

Background: Rosacea is an inflammatory disease with 50% of ocular involvement rate. Primary demodicosis is an eruption caused by Demodex mites, and there is no data about the rate of ocular involvement in primary demodicosis. Aims: In this cross‐sectional study, it is aimed to reveal the frequency of Demodex blepharitis in rosacea and primary demodicosis patients. Methods: In total, 58 rosacea, 33 primary demodicosis patients, and 31 healthy volunteers were included in the study. Four samples were obtained from eyelashes with a forceps and from facial skin by standardized skin surface biopsy. A positive result is described as detecting at least one Demodex mite on an eyelash or at five mites in the face. The patients were also examined by an ophthalmologist in terms of ocular involvement. Results: Both rosacea and primary demodicosis patients had significantly more complaints like burning and stinging in the eyes compared to the control patients (P =.001). Primary demodicosis and papulopustular rosacea patients had the highest numbers of eyelash mites, respectively, and significantly a higher rate of blepharitis than the control group. Conclusion: As a result, the Demodex count was significantly higher in the primary demodicosis and rosacea patients than the control group. We think that every Demodex‐positive patients should be evaluated for also eyelash mites to prevent a possible chronic blepharitis. [ABSTRACT FROM AUTHOR]

BACKGROUND: Polydioxanone Cog thread and poly-L-lactic acid (PLLA) thread have been used clinically for lifting and antiaging purposes. However, the histological changes in tissue and the efficacy of these 2 different types of thread have not been compared. OBJECTIVE: This study used hematoxylin and eosin (H&E) staining, Masson's trichrome staining, and electron microscopy (EM) to compare the results associated with the use of Cog thread and PLLA thread in rat skin. METHODS : Thirty female rats were divided into 3 groups of 10 rats each: a control group; a Cog group; and a PLLA group. Biopsy specimens obtained at 1, 3, and 6 months were examined using H&E, MT, and EM. RESULTS : Although significant increases were observed in dermal thickness and the numbers of fibroblasts in the PLLA group compared with the control group within the first month (p :.019), there were no significant differences between the Cog and control groups during this period (p :.245). Dermal thickness (p :.002) and numbers of fibroblasts (p :.001) were similar in samples obtained from the PLLA and Cog groups at 3 and 6 months, and both groups showed significantly improved outcomes compared with the control group. CONCLUSION : Poly-L-lactic acid and Cog sutures were effective in facial rejuvenation; both increased dermis thickness and stimulated collagen production. [ABSTRACT FROM AUTHOR]

Aim: Using an appropriate sunscreen is very important because the role of sun rays in development of skin cancer is well known. Besides, the recent increase in the use of cosmetics among adolescents is noteworthy. In this study, we aimed to determine the frequency of using cosmetics and the level of awareness of harmful effects of the sun, in adolescents. Material and Methods: In this cross-sectional descriptive study, a questionnaire consisted of 25 questions was applied, on voluntary basis, in middle schools. Results: A total of 607 students participated in the study; 434 participants were female students (71.5%), 173 were male students (28.5%) and the average age was 17 years. The question "Do you think it is necessary to protect from the sun?" is answered as "yes" by 361 of the female students (81.1%) and 109 of the male students (62.3%). The question "Do you use sunscreen?" is answered as "Yes" by 33.3% of all participants. Conclusion: In our study, we found that adolescents had a good understanding of the harmful effects of sun, but in contrast to this, we found that the use of sunscreen products was at very low levels. We think that education and methods for building awareness in this regard will be effective. [ABSTRACT FROM AUTHOR]

Vitiligo is a pigment disease characterized by the disruption of melanocyte structure and function. Its etiology is unknown; however, genetic predisposition, biochemical factors, and neural mechanisms are thought to be effective. Although many agents are being used for its treatment, generally there is no absolute cure. The aim of the present study is to evaluate the effectiveness of topical Nigella sativa seed oil on vitiligo patients. Thirty‐three vitiligo patients were included in the study. Totally 47 areas were evaluated in all patients. Cream containing N sativa seed oil was topically applied to hands, face, and genital region two times a day for 6 months. Statistically significant repigmentation was detected in hands, face, and genital region, the three treatment areas, and the p values are found.005,.001, and.004, respectively. N sativa can be used as an adjuvant therapy that can contribute to the treatment especially in sensitive skin areas like genital region. [ABSTRACT FROM AUTHOR]

13-cis-retinoic acid (13-cRA) is a safe treatment for severe acne, as it has immunomodulatory effects such as enhancing the antigen-presenting activity of epidermal Langerhans cells (LCs) and T-cell activity. The aim of this study was to prospectively show the alteration of sensitization and irritation reactions in acne patients undergoing 13-cRA therapy. This cross-sectional descriptive study consisted of 65 severe to refractory acne patients. The standard thin-layer rapid-use epicutaneous test (T.R.U.E. test) was used to screen sensitization and irritation reactions before and after 3-month 13-cRA treatment. Patch test results after 13-cRA therapy revealed an increase in newly formed sensitization and irritation reactions. Sensitization rate was significantly higher (43.1%) in the second patch test, when compared with the first patch test results (27.7%; P = 0.002). No statistical difference was found in irritation rates. In this study, the sensitization rate was higher after treatment, which could be attributed to the greater antigen penetration due to the disrupted barrier and/or the upregulation of antigen-presenting activity in LC. This would cause a more prominent immune reaction to antigens. Based on these findings, we suggest that 13-cRA may have a sensitization effect, and physicians should be aware of this complication due to 13-cRA treatment. ( SKINmed . 2021;19:-0).

Pemphigus is a group of rare and life-threatening autoimmune blistering diseases of the skin and mucous membranes. Although they occur worldwide, their incidence shows wide geographical variation, and prospective data on the epidemiology of pemphigus are very limited. Objective of this work is to evaluate the incidence and epidemiological and clinical features of patients with pemphigus in Turkey. All patients newly diagnosed with pemphigus between June 2013 and June 2014 were prospectively enrolled in 33 dermatology departments in 20 different provinces from all seven regions of Turkey. Disease parameters including demography and clinical findings were recorded. A total of 220 patients were diagnosed with pemphigus during the 1-year period, with an annual incidence of 4.7 per million people in Turkey. Patients were predominantly women, with a male to female ratio of 1:1.41. The mean age at onset was 48.9 years. Pemphigus vulgaris (PV) was the commonest clinical subtype (n=192; 87.3%), followed by pemphigus foliaceus (n=21; 9.6%). The most common clinical subtype of PV was the mucocutaneous type (n=83; 43.2%). The mean Pemphigus Disease Area Index was 28.14±22.21 (mean ± Standard Deviation). The incidence rate of pemphigus in Turkey is similar to the countries of South-East Europe, higher than those reported for the Central and Northern European countries and lower than the countries around the Mediterranean Sea and Iran. Pemphigus is more frequent in middle-aged people and is more common in women. The most frequent subtype was PV, with a 9-fold higher incidence than pemphigus foliaceus.