-INTRACRANIAL
-EXTRACRANIAL
The brain is insensitive to pain.
Causes of INTRACRANIAL Headache:
-Meningeal Irritation:due to meningitis,brain tumors or opertive trauma.
-Migraine Headache: it is abnormal vascular phenomenon.
tension or emotion causes vasospasmof cerebral vessels.The vessels becomes flaccid and pulsates with blood pressure,this giving severe headache.
-Hypertension: Headache due to marked expansion of cerebral brain vessels.
-Alcohol Headache: alcohol produces toxic meningeal irritation.
-Constipation: causes headache due to absorption of toxic substances to the blood resulting irritation.
Causes of EXTRACRANIAL Headache:
-Head and neck: muscular spasm of scalp and neck muscles due to emotional tension.
-Nose: irritation of the nasal sinuses.
-Eye: error of refraction.
-Ear: otitis media.
-Teeth: tootache.
-Systemic disorders: as anaemia or carbon dioxid poisoning.
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