Common causes and how to tell them apart
Itching of the nipple may be due to contact dermatitis (reaction to soaps, detergents, lotions or clothing), atopic dermatitis, skin dryness from over-washing, fungal infections such as Candida, or bacterial infections. In breastfeeding people, rubbing, cracked skin or milk leakage can aggravate itching. Rarely, nipple symptoms are caused by an internal breast lesion such as Paget disease; these cases often have persistent, usually one-sided crusting, bleeding, or a non‑healing sore.