The depigmented patches typically have an irregular outline but with a sharp border. They tend to be bilateral and symmetrical. The axilla and anal areas are frequently involved. Areas of depigmentation may have hyperpigmentation at the borders. The hair turns white and affected areas. Patient’s are examined under Woods light to accentuate areas with pigment loss.


Vitiligo. Pigment has been lost from a large area of skin. The border between pigmented and non pigmented skin is sharply defined.


Loss of pigment under the arms is a diagnostic sign of vitiligo


Loss of pigment on the penis is another highly characteristic and diagnostic sign of vitiligo


Vitiligo. Skin next to areas of pigment loss may be darker than normal.