The first thing you need to do is to avoid the fan from continuing to blow on your arm, while paying attention to warmth measures, and if necessary, medication can be taken to alleviate the symptoms. When a fan is blowing on the arm for a long time, the cold air will lead to poor blood circulation and muscle pain will occur. If this happens, the first thing to do is to avoid the arm being continuously blown by the fan, you should use clothing to wrap the arm, or use a hot towel to apply hot compresses on the painful parts, thus promoting blood circulation, which can help to alleviate the symptoms of pain. If the patient can not relieve the symptoms of pain, but also under the guidance of the doctor oral non-steroidal anti-inflammatory drugs, such as aspirin, ibuprofen, etc., if accompanied by a runny nose, sneezing symptoms, but also oral antihistamines, such as Benadryl, chlorpheniramine, etc.. After standardized drug treatment, patients can mostly relieve the symptoms of pain. If the patient has long-term fan blowing arm pain, it is recommended that the patient go to the regular hospital, combined with their own situation. Cooperate with the doctor to take relevant treatment measures.