Itchy breasts may be related to physiological reasons, inflammation, breast hyperplasia, breast eczema and other reasons. 1. Physiological reasons: itchy breasts mainly appear when women are approaching menstruation. Due to the hormone level disorder near menstruation, it may stimulate the breasts to produce itchy symptoms. 2. Inflammation: If the patient has an infectious disease such as mastitis, it can lead to itchy breasts due to congestion and edema in the lesion area. 3. Mammary gland hyperplasia: Mammary gland hyperplasia is generally due to the elevated level of estrogen secretion in women’s bodies, resulting in pathological changes in the mammary gland with glandular hyperplasia. During the period of illness, some patients will have the symptom of itchy breast. 4. Breast eczema: Eczema that occurs in the breast area, also known as breast eczema, is more common in women, usually seen around the nipple and areola, one of the most common causes is atopic dermatitis. Itchy breasts can occur. Other causes such as breast tumors should also be considered for itchy breasts, and patients should be advised to go to a regular hospital for a timely checkup to help screen for the cause and treat it in a timely manner.