Eczema of the breast is an inflammation of the skin in the breast area. The disease is most common in young women. The incidence of the disease may not be low, but because of the hidden location, avoidance of medical attention, or the initial onset of the disease is not thought of, neglected and delayed, the best time for treatment is missed, and when patients come to the clinic, they often have chronic eczema that has been recurring for many years, resulting in patients often needing more time and effort to completely cure. Therefore, patients should be aware of the disease and take appropriate treatment early. Symptoms of breast eczema include itchy, red, flaky skin on the breast area (mainly in and around the nipples), and in severe cases, even “yellow water” (oozing), edema, darkening, and tingling when bathing or rubbing. If this is your first time experiencing these symptoms, please think about any recent changes in your lifestyle that may be related to the onset of the disease before seeking medical attention. From clinical experience, the common triggers of breast eczema are: 1. Bras: Some patients gradually develop breast eczema after a few days of recent bra changes, which may be related to the bra material. Therefore, it is recommended that the choice of bra lining material is best to absorb sweat and soft texture, such as cotton products. 2, exercise: exercise is good, but some people are not used to exercise, suddenly after a high-intensity exercise, the skin is immersed in sweat for a long time, plus jumping leads to breast shaking and sports underwear rubbing, can induce breast eczema. This situation can also occur in men. 3, bra too strong: many girls like to wear a functional bra that can be concentrated to high, although it can increase the sense of beauty, but also heavy skin impermeability and friction, leading to the appearance of clinical symptoms. 4, allergies: Some people with breast eczema may be potentially allergic to the body, before puberty and no special discomfort. However, with changes in the immune system and the increase in external stimuli, symptoms may appear with the appearance of secondary sexual characteristics during puberty. This condition requires the necessary allergy family history tracing and allergen screening.