xeroderma pigmentosum
Noun: A rare, inherited genetic disorder. It is characterized by extreme sensitivity to ultraviolet (UV) light from the sun, leading to severe sunburn, freckling, and dry skin (xeroderma) that begins in early childhood. The condition is caused by a defect in the body's ability to repair DNA damage caused by UV light. This defect significantly increases the risk of developing skin cancers and other abnormalities at a very young age.
The term is used as a medical diagnosis and in scientific or clinical discussions about genetic disorders, dermatology, and DNA repair mechanisms. - The patient was diagnosed with xeroderma pigmentosum in infancy. - Xeroderma pigmentosum is often abbreviated as XP. - Research into xeroderma pigmentosum has provided key insights into how cells repair damaged DNA.
- The condition is sometimes referenced in discussions about photoprotection, the importance of sun avoidance, and genetic counseling.
- Families with a history of xeroderma pigmentosum require extensive genetic counseling.
- XP: The common medical abbreviation for xeroderma pigmentosum.
- Nucleotide excision repair (NER) disorder: This is the category of genetic diseases to which xeroderma pigmentosum belongs, referring to the specific DNA repair pathway that is defective.
- Kaposi's disease (an older, less specific term)
- XP (the standard abbreviation)
This term refers exclusively to the specific medical syndrome. It is not used in a general or figurative sense. The name itself comes from Greek and Latin roots: "xero-" (dry), "derma" (skin), and "pigmentosum" (pigmented), describing the dry and spotted appearance of the skin.
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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
