Pterygium unguis in a patient with recurrent type 2 lepra reaction.

A 35-year-old man with long-standing lepromatous leprosy and history of recurrent, severe type 2 lepra reaction was found to have pterygium unguis and destruction of the fingernails. We propose that the obliterative angiitis and endarteritis due to severe type 2 lepra reaction were responsible for these nail changes.