Quiz: do you recognise these painful nodules?

Hint: The condition can be caused by a common medication

A 27-year-old male presents with painful lesions in both armpits.

shadow man

He’s experienced several worsening episodes similar to this one since he was a teenager, and is becoming increasingly distressed by them. 

His most recent episode resolved three months earlier. 

On examination, deep-seated inflamed nodules with purulent discharge and thick, rope-like scars are visible in the axillae. Nodules and pitted scarring are also present in the groin and perianal region. 

Which of the following medications is associated with