xeroderma pigmentosum

noun Pathology.
a rare inherited disease characterized by sensitivity to ultraviolet light, exposure resulting in lesions and tumors of the skin and eyes.

1880–85; < Neo-Latin: pigmented xeroderma; see pigment, -ose1

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Medical Dictionary

xeroderma pigmentosum xeroderma pig·men·to·sum (pĭg'mən-tō'səm, -měn-)
A rare hereditary skin disorder caused by a defect in the enzymes that repair DNA damaged by ultraviolet light and resulting in hypersensitivity to the carcinogenic effect of ultraviolet light.

The American Heritage® Stedman's Medical Dictionary
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