Where does “harmless” dandruff end and psoriasis begin?
There is no clear-cut dividing line. Cosmetic dandruff usually occurs across the entire scalp. Dandruff is somewhat larger for oily scalps and primarily small for dry scalps. You may be suffering from psoriasis, if dandruff occurs in very limited skin areas. On the scalp, dandruff will often manifest itself in the peripheral hair growth areas such as around the ears and in the back of the neck. Frequently, increased dandruff also occurs in other areas of the body, such as the elbows or the legs.
