Small red dots on the breast may be due to pathological factors, herpes zoster, allergies and other factors, it is recommended to go to the hospital in time for examination and diagnosis, and then according to the doctor’s guidance and recommendations for treatment. 1. Pathological factors: If you suffer from hepatitis B virus, hepatitis A virus, or hepatitis, cirrhosis of the liver, liver cancer and so on. It starts with red spots on the hands and slowly spreads to other parts of the body. 2. Herpes zoster: Breast skin herpes zoster, can appear pain and small red dots on the skin, and can be seen clusters of herpes. 3. Allergic eczema: generally caused by contact with allergens, which causes red spots on the surface of the skin, itching and other symptoms, the patient should consult a doctor in time to clarify the cause of the disease, and if necessary, appropriate treatment.