title: Pityriasis lichenoides chronica presenting as hypopigmentation.
abstract: Seven black or dark skinned patients with pityriasis lichenoides chronica (PLC) are described, who presented with widespread hypopigmentation. The evidence on which a diagnosis of PLC was made is presented and the differential diagnosis discussed. The hypopigmentation was noted in some patients to be especially marked on the proximal parts of the limbs and axillary folds. A diagnosis of PLC should be considered in all dark skinned patients with a widespread hypopigmented rash.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008297:Male; D010859:Pigmentation Disorders / Q000175:diagnosis*; D010915:Pityriasis / Q000175:diagnosis* / Q000276:immunology / Q000473:pathology; D012867:Skin / Q000473:pathology