Sleeping with wet hair and waking up with a headache may be due to tension headaches and colds, which can be relieved by daily care and medication according to the cause. 1. Tension headache: sleeping with wet hair can cause cerebrovascular diastolic dysfunction due to cold, causing tension headache. Massage can be used to promote blood circulation in the scalp to reduce pain symptoms. Serious cases can take oral non-steroidal anti-inflammatory drugs such as ibuprofen to relieve. 2. Colds and flu: Sleeping with wet hair can easily cause colds and flu, so you will often have a headache after waking up. Oral anti-cold medication can be taken, such as compound aminophenol alkylamine tablets, aminocrystalline capsules, etc., after the cold is under control, the headache will naturally be gradually relieved. Headache after sleeping with wet hair, it is recommended to go to the hospital for examination and treatment under the guidance of the doctor, and strictly follow the doctor’s instructions to take medication.