Headache is an all-too-common symptom in daily life, but why do headaches occur and what are the factors that cause them? Here is a detailed understanding of this problem.
I. Physical and chemical factors
Headache is caused by inflammation, injury or mass compression, traction, stretching and displacement of pain-causing tissues inside and outside the skull
1. Headache caused by compression, traction, stretching or displacement of blood vessels. It is commonly caused by.
(1) Intracranial occupying lesions: such as tumors, abscesses, hematomas, etc. that cause compression, traction, extension or displacement of blood vessels.
(2) Increased intracranial pressure: such as hydrocephalus, cerebral edema, venous sinus thrombosis, brain tumor or cerebral cystic worm compression and blockage.
③Intracranial low pressure: such as lumbar puncture or lumbar anesthesia or after surgery or trauma, more cerebrospinal fluid is lost, resulting in intracranial low pressure.
2.Headache caused by various causes of intracranial and extracranial arterial dilation
For example, in acute intracranial and extracranial infections, pathogenic toxins can cause arterial dilation; metabolic diseases such as hypoglycemia, hypercapnia and hypoxia; toxic diseases such as carbon monoxide poisoning, alcohol poisoning, etc.; traumatic brain injury, epilepsy, acute sudden hypertension (pheochromocytoma, acute nephritis, etc.).
3, chemical stimulation of the meninges
①Bacterial meningitis Such as meningococcus, diplococcus pneumoniae, streptococcus, staphylococcus, Escherichia coli, Pseudomonas aeruginosa, curvilinear bacillus, gonococcus, aerobic bacillus, Mycobacterium pneumoniae, Mycobacterium tuberculosis, Borrelia burgdorferi, etc.
② Viral meningitis such as enterovirus, herpes virus, arbovirus, mumps virus.
③Other biological infectious meningitis such as cryptococcus, leptospira, rickettsia, toxoplasmosis, amoeba, cysticercosis, schistosomiasis, etc.
④Blood cerebrospinal fluid Such as subarachnoid hemorrhage, lumbar puncture accidental vascular injury and traumatic brain injury, etc. causing hard and soft meningitis and inflammatory reaction in the arachnoid.
⑤ cancerous meningitis such as meningeal metastasis of cancer, leukemia, and meningeal infiltration of lymphoma.
(6) Reactive meningitis such as secondary to systemic infection, poisoning, and ear and nose infection.
(7) Intracerebroventricular or intrathecal injection of drugs or contrast agents Either hydrodynamic or non-hydrodynamic as chemical factors, animal tests have confirmed that they all cause meningitis reactions.
4.Persistent contraction of head and neck muscles
Such as persistent contraction of head and neck muscles, reflex cervical muscle tension contraction caused by neck diseases, such as cervical spine osteoarthropathy, neck trauma or cervical disc lesion
5. Compression or inflammation of cerebral nerve, cervical nerve and ganglion
Common trigeminal neuritis, occipital neuritis, tumor compression, etc.
6, lesions in the eyes, ears, nose, paranasal sinuses, teeth, etc.
It can spread or reflect to the head and face causing radiated pain.
II. Endocrine factors
The first onset of migraine in women is often in adolescence, with the tendency of good onset during menstruation, remission during pregnancy and cessation during menopause. Tension headache is often aggravated during menstruation and menopause. For menopausal headache, the use of sex hormone drugs can stop the attack.
Third, mental factors
It is common in neurasthenia, hysteria or depression.