Unusual presentation of Henöch-Schonlein purpura

We present a rare case of a 4-year-old boy with newly diagnosed Henöch-Schonlein purpura (HSP) affecting the scrotum and penis. The patient presented to the emergency department with palpable purpura symmetrically distributed over the lower limbs. This was associated with arthritis of the right knee, abdominal pain and scrotal swelling. These symptoms were preceded by an upper respiratory tract infection (URTI). The patient was initially treated with empirical oral antibiotics for epididymitis and was discharged. He subsequently re-presented 12 days later with penile swelling, erythema and tenderness. An ultrasound scan of the penis revealed grossly oedematous subcutaneous tissue with normal penile architecture. His symptoms resolved spontaneously and the patient remains under close follow-up by the paediatric team for further sequelae of HSP.

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