Some people blowing fans and air conditioners immediately after sweating in summer are prone to headache, and in serious cases, it may cause a stroke. Some people blowing cold wind in winter, the head is also prone to pain, called wind-cold headache. There are three main reasons for headache caused by blowing wind: 1. The blood vessels in the head are more sensitive and cause contraction and spasm after being stimulated by wind and cold temperatures, thus causing tension headache. Chinese medicine believes that the cold wind invades the meridians, and the meridian qi is blocked, which leads to headache; 2. The head is usually in a warm environment, and the sudden stimulation of cold wind makes the blood vessels and nerves of the brain in a state of tension, which leads to a transient spasm of blood vessels, which leads to headache; 3. A few patients with severe trigeminal neuralgia can be induced to have an attack when they are stimulated by blowing wind, which can manifest as headache. The phenomenon of headache after blowing wind usually does not need too much worry, nor does it need to take special medication, but mainly to rest more and pay attention to keep warm. If the headache is difficult to relieve, it is recommended to consult a doctor and take relevant pain medication.