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Introduction: The natural history, the progression of a disease process in an individual over time, has not yet been fully elucidated in hidradenitis suppurativa (HS). In this large multicenter study, we aimed to investigate the natural history of HS and its gender differences., Methods: This cross sectional study included 827 patients. The chronological order of the clinical manifestations for each patient were recorded retrospectively. Sociodemographic characteristics, triggering factors, clinical, treatment, and prognostic features were also evaluated., Results: The mean age of disease onset was significantly younger in women than in men (22.42±9.28 vs. 27.06±20.56, p<0.001) and those with a family history (p<0.0001). The mean disease duration was 91.17±83.64 months. The most common symptom was purulent discharge (81%). The mean duration of abscess was shorter in women than in men (3.11±2.65 vs. 3.75±3.75, p=0.01). The axilla was the most common onset area followed by the inguinal and gluteal regions. The disease ran a more severe course in men. Abscess/inflammatory nodule was defined in the last 6 months in 88.6% of the patients; however, the first 5 years of the disease were the most active disease period in 67.5% of the patients. Multivariate analysis revealed being male, older age, family history, involvement of the axillary, inguinal and perianal regions independently associated with HS severity. While antibiotic use was the most important factor in improving the disease symptoms, stress was the most common aggravating factor. Biological therapy in men, laser epilation and pregnancy in women were significant alleviating factors. Whereas, weight gain was a more common aggravating factor for women., Conclusion: HS shows a relentlessly progressive course with inflammatory attacks, but the first years of the disease are the most active period. This study confirms that environmental and hormonal factors may play an important role in the disease course, probably with other endogenous or exogenous factors., (S. Karger AG, Basel.)

Background: Hidradenitis suppurativa (HS) causes significant physical, social, and psychological burdens. Internalized stigma, acceptance of negative attitudes and stereotypes of society regarding a person's illness, has not been studied previously in HS., Objectives: The objective of this study was to investigate the internalized stigma state of HS patients and identify the factors affecting it., Methods: This multicenter, prospective, cross-sectional study included 731 patients. Internalized Stigma Scale (ISS), Hurley staging, Physician Global Assessment, Dermatology Life Quality Index (DLQI), Skindex-16, Beck Depression Inventory-II (BDI-II), and Visual Analog Scale (VAS)-pain score were used in the study., Results: The mean ISS value (57.50 ± 16.90) was comparable to the mean ISS values of studies in visible dermatological and various psychiatric diseases. A significant correlation was found between the mean values of ISS and all disease activity scores, quality of life measures, BDI-II, and VAS-pain scores. Obesity, family history, low education and income level, vulva/scrotum involvement and being actively treated are significant and independent predictive factors for high internalized stigma in multivariate analysis., Conclusions: HS patients internalize society's negative judgements, which may create a profound negative effect on access to health care. Therefore, in addition to suppressing disease activity, addressing internalized stigma is fundamental for improving health care quality., (© 2023 S. Karger AG, Basel.)