[Hidradenitis Suppurativa: Most Relevant Epidemiological Characteristics of an Underdiagnosed Disease. A Cross-Sectional Study]

Introduction: Hidradenitis Suppurativa (HS) is a chronic inflammatory disease that primarily affects intertriginous areas of the skin, causing painful lesions and scarring. The pathophysiology remains partially unknown, and the disease is often diagnosed late, which significantly impacts patients' quality of life. Objectives: The aim of this study was to determine the prevalence of HS in a hospital population, describe its most relevant clinical and ultrasound characteristics, and evaluate the treatments used and their therapeutic responses. Methodology: A cross-sectional study was conducted based on the medical records of patients diagnosed with HS at the Hospital Universitario Austral between 2000 and 2024. Data on comorbidities, clinical manifestations, ultrasound findings, disease stage according to the modified Hurley scale, treatments, and therapeutic responses were collected. Results: A total of 205 patients were analyzed, with an average diagnosis age of 30 years, and 64.9% were women. The most affected areas were the axillae (74.6%), inguinal region (34.1%), and gluteal region (13.7%). The most common comorbidities were obesity (26.3%) and smoking (19.5%). The majority of patients were in Hurley stage I (14%). Conclusion: HS is a chronic disease that significantly affects the quality of life. Early diagnosis is key to effective treatment. This study provides valuable information about the prevalence, clinical and ultrasound characteristics of the disease, which may improve patient management.