Where one or more macules are in a quasi-dermatomal pattern. In common mans language Here the patches are unilateral and asymmetric in distribution.
One or more patches are distributed within the same segment (anatomical distribution of the body) of the body. Segmental vitiligo limited to lips and finger tips is often called Lip-Tip Vitiligo. This is perhaps most difficult to treat. Lip-tip Vitiligo: These are restricted to the lips and distal part of fingers and toes.