Hot water after washing hair without timely blow-drying hair headache symptoms, may be the scalp blood vessels in the cold contraction caused by cerebral vasospasm. The symptoms of headache is best not to be outdoors, because the outdoor temperature is low, it is best to enter the room, to avoid being cold, drink more boiled water. You can dry your hair with a dry towel or blow your hair with the hot air of a hair dryer, and massage your scalp points with your hands, commonly used points are temples and so on. If the symptoms of headache are not relieved, you need to take medication, and there are two commonly used medications. One is non-steroidal anti-inflammatory drugs, commonly used drugs are acetaminophen tablets, ibuprofen tablets, etc.; the other commonly used drugs are Zhenbenning capsules, Zhengtian pill, etc.. In the future, when you wash your hair, the water temperature should not be too high, and it is best to blow dry your hair in time, and not to sleep with wet hair, so as not to cause headaches and other uncomfortable symptoms.