Headache is a symptom that arises from a variety of causes, in a few tissues within the skull with painful fibers (skull base vessels, meninges,); outside the skull with local factors in the head and also systemic factors. Etiology: 1.Nervous functional headache. 2.Membrane stimulation causes headache: acute and chronic inflammatory exudates in the skull (such as meningitis, etc.), or blood from hemorrhagic diseases (such as subarachnoid hemorrhage, etc.) stimulate the meninges, or brain trauma and brain tumor cause brain edema that strains the meninges and blood vessels and produces headache. 3.Nerve stimulation: cranial nerves (such as trigeminal nerve, linguopharyngeal nerve, etc.), cervical nerve inflammation and compression (cervical spondylosis), displacement, etc. can cause corresponding neuralgia. 4.Vascular dilation or spasm: Extracranial arterial dilation is most common in migraine and frontal arteritis. In the case of acute and chronic inflammation inside and outside the skull, pathogens and their toxins can cause vasodilatory headache; metabolic diseases, toxic diseases, traumatic brain injury, after epileptic seizures, hypertensive encephalopathy, and large amounts of cerebrovasodilator drugs can cause vasodilatory headache. Vascular spasm caused by aneurysm and arteriovenous malformation. 5.Increased internal pressure caused by traction and compression of blood vessels; intracranial occupying diseases; increased intracranial pressure caused by acute meningitis and encephalitis, toxic encephalopathy, cerebral edema, hydrocephalus, venous sinus thrombosis, cerebral tumor or compression blockage of cysticercosis causing impaired cerebrospinal fluid circulation; and also seen in headache caused by more cerebrospinal fluid outflow after lumbar puncture and lumbar anesthesia and decreased intracranial pressure, resulting in intracranial venous sinus and venous dilatation. 6.Headache caused by spasmodic contraction of head and neck muscles: head and neck muscle tension, inflammation, local mass, chronic abscess and other neck diseases reflexively cause spasmodic and persistent contraction of neck muscles, resulting in headache. 7.Radiation or involvement headache of organs near the head: It is common that lesions in the eyes, ears, nose, sinuses, teeth, etc. can spread or reflect to the head and produce headache. Differentiation: (1) Rapid onset: acute (infection, trauma, hemorrhage, lumbar puncture), slow (tumor, abscess, chronic hematoma, systemic disease). (2) Paroxysmal or persistent: (3) Site: (eye, ear, occipital, facial). (4) Accompanying symptoms treatment: 1) Etiology treatment. 2) Symptomatic treatment. Chinese medicine believes that headache is caused by internal injury and external sensation. The identification and typing of headache: 1. Wind-cold attacking luo evidence: transient severe pain like cutting on the face, triggered or aggravated by cold, tightness of the face during attack, local preference for warmth, evil wind-cold, no thirst, thin white fur, floating and tight pulse. 2. Wind-heat injury evidence: transient burning or cutting-like pain on the face, aggravated by heat, slightly reduced by cooling, red face when painful, accompanied by fever, evil wind, dry mouth and sore throat, red tongue, thin yellow moss, floating pulse. 3.Stomach fire attack evidence: facial paroxysmal burning pain, forehead pain, red face and eyes, gum swelling and pain, dry mouth, thirst for cold drinks, constipation and urination, red tongue, yellow fur, smooth pulse. 4, Liver and gallbladder fire incandescence evidence: facial paroxysmal electric shock-like severe pain, burning cheeks, red face and eyes, dizziness, irritability, bitter mouth and dry throat, chest fullness, constipation, urinary redness, red tongue, yellow dry coating, pulse string count. 5. Wind-phlegm obstruction: painful facial twitching, numbness, dizziness, stuffiness in the chest and epigastrium, vomiting and salivation, white and greasy coating, smooth pulse. 6. Internal obstruction of blood stasis: repeated facial pains, like needles and knives when severe, dark face, no obvious cold or heat inducements, purple tongue or petechiae, string and astringent or fine pulse. 7.Yin deficiency and hyperactivity of yang: prolonged illness or old age, facial paroxysmal convulsion-like pain, dizziness, insomnia, irritability, dry throat and bitter mouth, soreness and weakness of the waist and knees, red tongue with little fluid, thin and counted pulse.