Xeroderma n. : Ichthyosis.

Xeroderma n. : A skin disease characterized by the presence of numerous small pigmented spots resembling freckles, with which are subsequently mingled spots of atrophied skin.

Example:
What chromosome is the disorder Xeroderma Pigmentosum carried on?

Taxonomy
Xeroderma pigmentosum, XP, skin, free encyclopedia, disorder, mutations, gene, protagonist, repair damage, syndrome, sun exposure, DNA repair, XPD, nucleotide excision repair, patients, exposure, symptoms, Type A.

Defination from the web:
Xeroderma pigmentosa, or XP, is an autosomal recessive genetic disorder of DNA repair in which the ability to repair damage caused by ultraviolet ... Bloom syndrome · Rothmund-Thomson syndrome · Xeroderma pigmentosum. Ectodermal dysplasia ...