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vitiligo
noun [ U ]
uk /ˌvɪt.ɪˈlaɪ.ɡəʊ/
us /ˌvɪt̬.ɪˈlaɪ.ɡoʊ/
a medical condition in which areas of the skin lose pigment (= the substance that gives it colour), causing them to appear white:
Vitiligo frequently affects the face and the back of the hands, areas that are the most visible in public.
Vitiligo may be an autoimmune disorder, according to Dr. Katharine Lam, a dermatology expert.
Cosmetics are often used to disguise vitiligo.
There is no clear distinction between these disorders and such accepted medical problems as acne or vitiligo (a disorder of skin pigmentation).
Vitiligo skin has no natural protection against the sun's rays.