1. A rare genetic condition characterized by an eruption of exposed skin occurring in childhood and photosensitivity with severe sunburn; inherited as a recessive autosomal trait in which DNA repair processes are defective so they are more likely to chromosome breaks and cancers when exposed to ultraviolet light
   "Patients with xeroderma pigmentosum must avoid all exposure to sunlight"

Type of: xeroderma, xerodermia

Encyclopedia: Xeroderma pigmentosum, type 4