Headache is a common symptom, caused by a lot of headache diseases, common diseases are: 1, neurological headache, neurological headache, most of the headache is due to excessive mental stress, too much tension caused by the mood, there is no organic lesions. Common diseases are neurasthenia, trigeminal neuralgia, etc.; 2, intracranial lesions, such as cerebral hemorrhage, cerebral infarction, brain tumor, encephalitis, etc., the common symptom of headache, can be accompanied by symptoms such as limb activity inconvenience, encephalitis can appear fever, headache and other symptoms; 3, respiratory diseases, such as sinusitis, pneumonia caused by fever symptoms. The main clinical symptoms of sinusitis are nasal congestion, runny nose, headache, etc.; 4, bronchitis, heat stroke, hypertension, leukemia, cerebral vasospasm, insomnia, acute upper respiratory tract infections, cerebral roundworms can cause headache, it is best to go to the hospital to check the blood routine, blood pressure, temperature, etc. to further confirm the diagnosis.