Migraine headaches occur when you get cold because the blood vessels in the skull constrict after you get cold, resulting in slight ischemia and hypoxia in the brain. If this condition persists, it can lead to nerve damage, which can also cause abnormal nerve sensation and headache symptoms. When a patient suffers from hypertension or other diseases, the headache may be exacerbated by vasoconstriction after exposure to cold, which may also be a harbinger of hemiplegia in the long term. In clinical practice, prompt treatment of the primary disease is required, such as stabilizing blood pressure and lowering blood sugar, and dilating cerebral blood vessels as much as possible to relieve the phenomenon of vasospasm and alleviate clinical headache symptoms. In addition, increased neurosensitivity and excessive mental fatigue can cause plant nerve disorders, and headaches can also occur after exposure to cold, which requires timely psychological relief.