<unk>  can be classified in two clinical subtypes; segmented<unk> , which affects only 1 segment of the body (face, arm or leg) and non-segmented<unk> , involving more than 1 segment, such as both knees or both hands.
Vitiligo classification
Psoriasis classification
Alopecia classification
Acne vulgaris classification
Scleroderma classification
Eczema classification
Dysplastic nevus classification
Alopecia epidemiology and demographics