INTRODUCTION: Seborrheic dermatitis is a common, chronic inflammatory skin disorder, characterized by erythematous papulosquamous lesions in body regions that are rich in sebaceous glands, particularly the scalp, face, and intertriginous areas. Seasonal variation has been reported in different skin diseases with conflicting results. We aimed to analyze the demographic characteristics of the patients with seborrheic dermatitis and to determine the impact of seasonality on seborrheic dermatitis.
METHODS: In this retrospective, cross-sectional, single-center, hospital-based study, the patients, who visited for the diagnosis of seborrheic dermatitis to our outpatient dermatology clinic between 01.06.2015-01.06.2020, were included. We reviewed the outpatient dermatology service database retrospectively. Both pediatric and adult dermatology outpatient administrations were evaluated.
RESULTS: A total of 2.656 patients with seborrheic dermatitis were admitted to our outpatient clinic between the study period. The mean age of the patients was 31,99±15,88 (0-87) years. Among these patients, 1.540 (58%) were males and 1116 (42%) were females. Seborrheic dermatitis was most common in 20-30 years (29,9%). The mean age of the females was 29,51±15,43, and 33,80±15,96 in males. As we compare according to the seasonal activity, 817 (31%) patients admitted in winter, 615 patients in spring (23%), 452 patients in summer (17%), and 772 (29%) patients in autumn.
DISCUSSION AND CONCLUSION: Seborrheic dermatitis is a multifactorial skin disease that is common in the population.In our study,a wide patient profile was evaluated and it was observed that seborrheic dermatitis more often affects the middle-aged adults and men more.In our study, it was observed that patients frequently applied during the cold season.Although the data obtained from this study are similar to the literature,we hope that these findings will contribute to epidemiological data on behalf of our country.We think that prospectively designed population-based studies that evaluate other triggering factors will be more useful in order to explain the seasonal attacks observed in patients more clearly.