Any dermatitis may heal leaving pale skin, as may excessive use of corticosteroid creams used to treat episodes of eczema. The hypopigmentation is due to both reduced activity of melanocytes with fewer and smaller melanosomes. The cause of<unk>  is not known. Dry skin and atopic dermatitis may co-exist. The patches may become more apparent after sun exposure, when the normal surrounding skin is tanned. The role of ultraviolet radiation, bathing or not bathing, low serum copper and Malassezia yeasts is not clear.
Pityriasis alba
Alopecia mucinosa
Pityriasis rosea
Phytophotodermatitis
Ichthyosis acquisita
Pityriasis rubra pilaris
Pityriasis amiantacea
Alopecia universalis