Vitiligo is an autoimmune condition, meaning the immune system mistakenly attacks and destroys the body's own pigment-producing cells. The exact trigger isn't fully understood, but genetics play a role, and vitiligo often runs in families. In some people, new patches can develop at sites of skin injury or repeated friction — a phenomenon known as the Koebner response — and stress or significant physical trauma is sometimes reported as a trigger for onset or spread.
Treatment aims to slow progression and encourage repigmentation, and is generally tailored to how extensive and active the vitiligo is:
Vitiligo occurs when melanocytes — the cells responsible for producing pigment in the skin — are destroyed, leaving smooth, depigmented white patches. It can affect any part of the body, including the skin, hair, and the inside of the mouth, and patches often appear symmetrically, though this isn't always the case. It's not contagious, and it isn't caused by anything you've done.
Certain factors are associated with a higher likelihood of developing vitiligo:
Vitiligo is generally classified into two main types: