1.Headache caused by head lesions.
(1) Headache caused by intracranial diseases.
(1) Headache caused by intracranial infection.
(2) Headache caused by intracranial vascular lesion.
(3) Headache caused by intracranial occupational lesion.
(4) Headache caused by cranial injury.
⑤ Migraine.
(6) Cluster headache.
⑦Epileptic headache.
(8) Low cranial pressure headache.
(2) Headache caused by extracranial diseases.
① Headache caused by scalp and extracranial diseases.
(ii) Peripheral neuropathy headache.
(3) Headache caused by eye disease.
④Nasal headache.
⑤ Otogenic headache.
(6) Oral headache.
(7) Myotonic headache.
⑧Arteritis headache.
2.Headache caused by systemic diseases.
(1)Headache caused by infectious diseases.
(2) Headache caused by toxic diseases.
(3) Headache caused by other systemic diseases.
(3) Cardiogenic headache.