The symptoms are usually caused by urticaria, which can be treated with medication, including antihistamines. If the phenomenon of the body is hot like pins and needles, can be caused by heat contact urticaria or cholinergic urticaria. You should pay attention to maintain emotional stability and try to wear cotton clothing to reduce the appearance of such phenomena. If the symptoms of stitches are obvious after heat exposure, they can be treated with antihistamines, including oral medications such as desloratadine tablets, cetirizine hydrochloride tablets, ebastine tablets, and avastin. If such symptoms are obvious on the body, you should go to the hospital in time for examination, and the use of the above drugs should follow the doctor’s advice.