Generalized eruptive keratoacanthoma of Grzybowski.

A 51-year-old otherwise healthy farmer presented with a 1-year history of numerous extremely itchy bumps on his skin. The lesions came in crops, were pinhead-sized, and subsequently enlarged to form nodules of varying sizes. There was no history of ocular or mucosal involvement or of spontaneous healing of any of the lesions. His medical history was unremarkable. There was neither any family history of similar illness nor any personal or family history of atopy or malignancy. He was previously treated with potent topical steroids and antihistamines without any appreciable benefit.