Differentiating hidradenitis suppurativa flare from infection in the emergency department and recommendations for transitioning care to the outpatient setting.

Hidradenitis suppurativa is a painful and often progressive inflammatory skin condition that presents with papules, nodules, abscesses, and tunnels in the axillary, inframammary and anogenital regions. HS can be difficult to differentiate from a skin infection, such as a bacterial abscess. However, differentiation between the two is important as management of hidradenitis suppurativa often requires long-term follow-up and specialist care. Emergency physicians should be aware of how to differentiate acute hidradenitis suppurativa flares from similarly presenting conditions, particularly skin and soft tissue infection, when encountered in the emergency department and what steps should be taken to adequately bridge care to the outpatient setting.