This cross-sectional study aims to evaluate the periodontal status of individuals diagnosed with hidradenitis suppurativa (HS) and to compare them with systemically healthy controls. HS is a chronic inflammatory skin disease characterized by recurrent lesions and systemic inflammation, which may influence periodontal health. In this study, periodontal parameters-including probing depth, clinical attachment loss, gingival index, plaque index, and bleeding on probing-will be assessed using standard clinical methods. Dermatological examination will include disease duration, lesion characteristics, and Hurley staging. The study will investigate the prevalence of periodontitis in HS patients and explore potential associations between periodontal findings and HS severity. Findings from this research may provide insight into shared inflammatory pathways and contribute to understanding the possible link between HS and periodontal disease.

Inclusion Criteria:

• Having a diagnosis of hidradenitis suppurativa.
• Age greater than 18 years.
• Presence of at least 12 teeth in the mouth, excluding third molars.

Exclusion Criteria:

• Age under 18 years.
• Pregnancy.
• Breastfeeding.
• Receiving treatment for periodontitis or hidradenitis suppurativa within the past 3 months.
• Use of antibiotics, anti-inflammatory drugs, or immunomodulatory medications within the past 3 months.

The study population consists of adult individuals with a confirmed diagnosis of hidradenitis suppurativa and age-matched healthy controls, each having at least 12 teeth (excluding third molars), and no recent periodontal or systemic treatment.