Medically reviewed by William Truswell, MD Dandruff is a mild form of seborrheic dermatitis caused by an overgrowth of the yeast (fungus) Malassezia. It causes oiliness, dryness, white or yellow ...
An itchy scalp is both annoying and embarrassing. Whatever the reason - be it dryness, dandruff or some other skin condition - the incessant urge to scratch interrupts your day and can be quite ...