Headache is a common clinical symptom, and the causes of headache after cold are mainly the following: 1. Cerebral blood vessels receive cold stimulation leading to vasospastic contraction, which can cause temporary insufficiency of blood supply to cerebral arteries and spasmodic headache, such as going out in cold weather, washing hair with cold water, etc. 2. Migraine is a kind of vascular fluctuation headache, which is more common in young female patients, and mental tension, exertion, cold stimulation, insomnia, etc. can trigger acute recurrence of migraine. The acute recurrence of migraine can be triggered by stress, exertion, cold stimulation, insomnia, etc. The common clinical symptoms include headache, nausea, vomiting, etc. Chinese medicine believes that headache in wind is caused by the invasion of wind and cold into the body, so the main treatment is to drive away the wind and relieve pain.