Itchy nipples in the elderly may be related to eczema, allergy, mastitis and breast cancer. 1. Eczema: Eczema is an inflammation of the superficial dermis and epidermis caused by a variety of internal and external factors, and common symptoms include red spots, pimples, and itching. When eczema grows on the nipple, it will lead to obvious itching sensation on the nipple. 2. Allergy: More elderly people may not wear underwear or wear underwear made of poor material, which may lead to nipple allergy, nipple allergy, will cause obvious itching. 3. Mastitis: Mastitis is an inflammation of the breast tissue with or without microbial infections, which can show redness, swelling, heat and pain, and can also cause significant itching. 4. Breast Cancer: Breast cancer is a common malignant tumor in women in which the epithelial cells of the breast proliferate out of control and become malignant. Special types of breast cancer, such as nipple eczema-like cancer, will cause itching of unilateral nipple, areola and its surrounding skin. The specific treatments will vary depending on the causes of the disease, and it is recommended that the patients go to the hospital for medical treatment in time.