Itchy nipples can be caused by allergy to clothes, poor local hygiene, etc. It can also be caused by breast eczema, neurodermatitis and other pathologic causes, including external stimuli and breast lesions, etc. It is recommended to go to the hospital in time for diagnosis and treatment. Itchy nipples are often caused by external stimuli such as allergy to clothing, poor local hygiene, excessive friction, etc., and can be relieved by avoiding external stimuli. Pathological causes are commonly found in breast eczema, neurodermatitis, breast hyperplasia, inflammatory breast cancer and eczema-like breast cancer, etc., which need to be relieved by corresponding medication or surgical treatment. There are many reasons for itchy nipples, so it is recommended to go to the hospital in time to avoid delaying the condition and causing physical harm.