Pachyonychia Congenita / 대한피부과학회지

ABSTRACT

A case of pachyonychia congcnita occurring in a 8 year-old boy is described. A few weeks after delivery, his mother noticed thickening of all the finger and toe nails of her baby. Family history was denied. In addition to characteristic features of pachyonychia congenita of all the nails, follicular keratotic papules were noted on the knees, elbows, buttocks and legs, and also tender thick calluses, on the soles with palnioplantar hyperhidrosis. There were three cornu cutaneurn on the popliteal and left antecubital fossae. Other associated fea.tures include a painful tense bulla at the left fourth finger, irnpetiginous patches on the anterior thighs, hoarseness and leukokeratosis linguae, sparseness of the scalp hairs, and granulosis rubra nasi accompanied by facial hyperhidrosis.