Headache is one of the most common symptoms. Very few people experience no headache in their lifetime. Approximately 2/3 of the healthy population has experienced a headache, and only 18% of them seek medical attention with a headache as their primary complaint. When a headache occurs, it is especially important to differentiate it with general health knowledge in order to obtain appropriate treatment. The following are the main points of identification: 1. Acute headache with fever, along with generalized aches and pains, malaise, and poor appetite, is commonly associated with the common cold caused by a virus. 2.Sudden headache with nausea, vomiting and impaired consciousness may be associated with cerebral hemorrhage or subarachnoid hemorrhage, mostly in middle-aged and elderly people. 3.The headache caused by glaucoma is mostly in the upper part of the orbit or around the eye, and is often accompanied by visual impairment. 4.Episodic throbbing pain in one or both temples with nausea and vomiting, mostly seen in young and middle-aged women, may be vascular headache. 5.Dull headache without cranial pressure increase can be seen in myotonic headache, paranasal sinusitis headache and cervical spine headache. If there is an increase in cranial pressure, we should be alert to the possibility of brain tumor. 6. Those with severe lightning-like pain on one side of the face are often characteristic of trigeminal neuralgia. Headache is a superficial phenomenon of many complex conditions and should usually be treated under the guidance of a specialist. Of course, family members can identify certain headaches early according to their characteristics and go to a hospital neurological specialist to avoid delaying good treatment opportunities.