What does xeroderma mean?
Xeroderma is a medical term for abnormally dry skin and is also closely associated with xeroderma pigmentosum, a rare inherited disorder in which cells cannot repair ultraviolet-induced DNA damage effectively. People with the condition are extremely sensitive to sunlight and face a markedly increased risk of skin and other cancers, so rigorous photoprotection is central to daily life. When used on its own, xeroderma can refer more generally to dryness of the skin, including dryness caused by a damaged moisture barrier. The word is formal and chiefly appears in clinical or educational contexts rather than everyday speech. Its unusual name, however, is memorable: it combines Greek roots meaning “dry” and “skin.” Knowing the term helps readers distinguish ordinary dryness from xeroderma pigmentosum, a genetic condition whose implications are far more serious and whose management depends on minimizing ultraviolet exposure.
nounXeroderma means abnormally dry skin. It is especially associated with xeroderma pigmentosum, an inherited disorder in which ultraviolet exposure causes severe cellular damage and DNA repair is defective.
- The inherited genetic disorder xeroderma pigmentosum, marked by extreme sensitivity to ultraviolet light, defective repair of ultraviolet-induced DNA damage, and a greatly increased risk of skin and other cancers.
- Dryness of the skin, especially abnormal dryness associated with an impaired moisture barrier.
"Sun protection is essential for people with xeroderma pigmentosum, whose skin is highly vulnerable to ultraviolet damage."
"Sun protection is essential for people with xeroderma pigmentosum, whose skin is highly vulnerable to ultraviolet damage."
"The clinical report described xeroderma pigmentosum, a rare genetic condition associated with extreme photosensitivity."
The plural is grammatically xerodermas but is rare in modern usage, where the expression usually names a disease entity or a specific clinical condition.
"The registry recorded cases of xeroderma and distinguished them from other forms of photosensitivity."
In xeroderma pigmentosum, sunlight can trigger DNA damage that the body struggles to repair—making strict sun protection a lifesaving habit.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does xeroderma come from?
Xeroderma was formed in New Latin from Greek xēros, meaning “dry,” and dérma, meaning “skin,” so it literally means “dry skin.” Its relatives xeric, xerosis, and xerophyte likewise trace to xēros; a xerophyte is an organism adapted to dry environments. The compound xeroderma pigmentosum adds the Latin pigmentosus, meaning “pigmented,” to the name of the genetic condition characterized by pigment changes and extreme ultraviolet sensitivity.
Related word forms
How xeroderma is actually used
This is specialist medical vocabulary. The unqualified term has two established uses and therefore needs context: it may denote dryness of the skin or refer to the genetic disorder commonly called xeroderma pigmentosum.
Easily confused with xeroderma
Xeroderma involves dryness and, in its best-known form, extreme sensitivity to ultraviolet light, whereas scleroderma is an autoimmune connective-tissue disease that causes skin thickening and hardening.