A few small red dots on the body after sex, the first thing to consider may be due to strenuous activities, the body is relatively hot conditions, resulting in the appearance of small red dots on the skin, usually this situation and symptoms will return to normal in a short period of time. In addition, this symptom may also be caused by an allergic reaction, which is related to personal allergies, which is mainly manifested as itchy skin symptoms. Usually need to pay attention to avoid contact with allergic substances, it is best to test the allergens, at the same time can use anti-allergy drug treatment.