The evaluation of vitiligo begins with a medical history and physical examination.

Physical findings in someone with vitiligo include:

• Patches of light-colored skin
• Most common on the hands, forearms, feet and face
• May be large or small
• May be in multiple locations
• Hair growing in a patch may be white

Tests are not necessary to make the diagnosis of vitiligo.

Tests that may be used to evaluate vitiligo include:

• Skin biopsy