10th July 2023

A 40-year-old gentleman presented with new, tender erythematous lesions on his shins

A 40-year-old gentleman presented with new, tender erythematous lesions on his shins (see image below). On examination, the lesions were well defined oval nodules that appeared bright red without ulceration. No other sites were found to be affected.

Given the likely diagnosis, which of the following is most likely to NOT be the underlying medical cause?

Erythematous lesions on the shins

Select the SINGLE most appropriate option from the list below. Select ONE option only.