Patients with cold sweat when they have a headache often suggest a more serious condition, which may be brain hemorrhage, or migraine, cluster headache symptoms, as follows: First, brain hemorrhage: pay attention to exclude whether there is brain hemorrhage, brain hemorrhage, including general hypertensive brain hemorrhage, and subarachnoid hemorrhage, are very serious cerebrovascular disease, the mortality rate is very high, some patients will have very severe headache, severe Some patients may have severe headache and severe headache with cold sweat, nausea and vomiting. It is important to go to the neurology department of the hospital immediately to rule out any intracranial hemorrhage by examining the head CT. If there is intracranial hemorrhage, hospitalization should be carried out immediately. Secondly, migraine and cluster headache: In case of migraine and cluster headache, the severity of pain can be very high, and some patients can also have cold sweats, so it is also necessary to go to the neurology department of the hospital and take oral medication to relieve the symptoms.