xeroderma pigmentosum: 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
xeroderma: a mild form of ichthyosis characterized by abnormal dryness and roughness of the skin
homecoming: an annual school or university reunion for graduates