A case of parakeratosis pustulosa / 대한피부과학회지

Parakeratosis pustulrisa occurs most often on the upper cxtiemities of girls and that is considered to be a variant of either eczema or psoriasis. It presents with scaling of the tip of the finger, subungual hyperkeratosis, and irregular t.hickening and rumblirg of the distal nail plate. We report a 4-year-old female child patient, who showed spon.aneous nail extraction with erythematous scaly path with pustule formation on the left thumb, ring finger and right middle finger nails. The microbiologic and mycologic examinaiors revealed negative results. Histopathologic examination showed focal parakeratosis of the nail bed and the lower part of the nail plate. We treated her with etretinate(Tigason, 0.6mg/kg/day).