This picture shows loss of hair along a well-defined line. In patients with vitiligo, loss of pigment often begins over the back of the hands. If this is the primary area of involvement, a search should be made to determine if the patient has had exposure to phenolic disinfectants known to produce loss of pigment. Elimination of these compounds may result in return of the pigment that was lost. The pustules are infected where medication was injected into the area.
Hair loss is referred to as alopecia.
Patchy hair loss on the scalp is called alopecia areata. Complete scalp hair loss is alopecia totalis. Loss of all body hair is called alopecia universalis. Hair loss is referred to as alopecia. Patchy hair loss on the scalp is called alopecia areata.