Hidradenitis Suppurativa Stages

HS is classified using the Hurley Staging System into three stages: Stage I (mild), single or multiple abscesses without sinus tracts or significant scarring; Stage II (moderate) , recurrent abscesses with sinus tract formation and scarring in multiple areas; Stage III (severe) , diffuse involvement with multiple interconnected sinus tracts and extensive scarring across entire regions.

Yes. Without adequate treatment, HS can progress through the stages over time. However, progression is not inevitable, with appropriate medical management, many patients maintain stable disease or even see improvement. Early diagnosis and treatment are critical for preventing progression to more severe stages.

The Hurley staging system, developed by dermatologist Harry Hurley in 1989, is the most widely used classification system for HS severity. It divides HS into three stages based on the presence and extent of abscesses, sinus tracts, and scarring. While simple and clinically useful, it does not capture disease activity or quality of life impact, which is why newer scoring systems like IHS4 and DLQI are also used.

The original Hurley system has only three stages. However, some clinicians and researchers use modified or extended staging systems. The International Hidradenitis Suppurativa Severity Score System (IHS4) provides a more nuanced numerical score. The term 'Stage IV' is not part of the standard Hurley classification.

Stage I typically responds to topical antibiotics (clindamycin), oral antibiotics, and lifestyle modifications. Stage II usually requires systemic antibiotics, hormonal therapy, and often biologic medications. Stage III typically requires biologic therapy and surgical intervention (wide local excision) in addition to systemic treatment. Treatment is always individualized based on the patient's specific presentation and response.