Granulomatous periorificial dermatitis

Granulomatous periorificial dermatitis (GPD) is a distinct facial eruption in prepubertal children that should be distinguished from granulomatous rosacea, perioral dermatitis, and cutaneous sarcoidosis. We describe a case of GPD and review the key distinguishing features of this condition.

Pet hamsters as a source of rat mite dermatitis

Rat mite dermatitis is characterized by pruritic papules in a patient exposed to the tropical rat mite Ornithonyssus bacoti. We report a case of a woman with rat mite dermatitis who developed this eruption after exposure to her pet hamster. Mites were collected from the hamster and identified as O bacoti. Reported sources of rat mites, as well as avian mites and other mites that bite humans, are reviewed.