Generalized vitiligo is the most common type of vitiligo. In this type, there is a widespread distribution of white macules, often in a symmetrical array.
Focal vitiligo appears as one or more macules on a single site. In some cases, this may be an early evolutionary stage of one of the other forms of the disease. Typical macules occur in the elbows, fingers, lower back, genital area, and knees.
The segmental type, which is uncommon, features one of several macules on one hand or one side of the body.