Who gets and causes
Millions of people worldwide have vitiligo. Nearly half get it before they
reach 21 years of age. Most will have vitiligo for the rest of their lives. It
is very rare for vitiligo to disappear.
Vitiligo occurs about equally in people of all skin colors and races. About
half the people who get vitiligo are male and half are female.
The risk of getting vitiligo increases if a person has:
A close blood relative who has vitiligo.
An autoimmune disease, especially Hashimoto’s disease (a thyroid disease) or
alopecia areata (causes hair loss).
What causes vitiligo?
Vitiligo develops when cells called melanocytes (meh-lan-o-sites) die. These
cells give our skin and hair color.
Scientists do not completely understand why these cells die. One type of
vitiligo, non-segmental vitiligo, may be an autoimmune disease. An autoimmune
disease develops when the body mistakes a part of itself as foreign. If the body
mistakes these cells as foreigners, it will attack and kill these cells.
Studies suggest that the other type of vitiligo, segmental vitiligo, has a
different cause. This type seems to develop when something in the body’s nervous
system goes awry.
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