3. A headache that is not caused by another
underlying disease,trauma or medical
condition.
Accounts for about ninety percent of all
headaches.
secondary headache
Caused by exogenous disorders
5. Ice pick
Ice cream
Exertional
Cough
Chronic paroxysmal hemicrania
SUNCT(Short-lasting unilateral neuralgiform
head ache with conjunctival injection and
tearing)
6. Intracerebral bleeding
Raised intracranial pressure
Infection
Inflammatory disease
Post-herpetic neuralgia
Referred pain from other structures
7. Stimulation of primary nociceptors
Lesions in pain-producing pathways of
PNS&CNS
8. Scalp
Middle meningeal artery,
Dural sinuses,
Falx cerebri &
Proximal segments of the large pial arteries
9. The ventricular ependyma, choroid plexus, pial
veins, and much of the brain parenchyma are
not pain-producing.
10. Key structures involved
Large intracranial vessels and dura mater
Peripheral terminals of the trigeminal nerve
that innervate these structures
Caudal portion of the trigeminal nucleus,
which extends into the dorsal horns of the
upper cervical spinal cord and receives input
from the first and second cervical nerve roots
(the trigeminocervical complex)
Pain modulatory systems in the brain that
receive input from trigeminal nociceptors
11.
12. Trigeminal nerve
First 3 cervical nerves
Fascial nerve
Glossopharyngeal and vagus nerve
13.
14. Distension,traction or dilatation of i/c or e/c
arteries.
Traction or displacement of large intracranial
veins or their envelope.
Meningial irritation & raised ICT.
15. Compression ,traction or inflammation of
cranial or spinal nerves.
Spasm ,inflammation & trauma to cranial &
cervical muscles.
Disturbance of intracerebral serotonic
projection/activtn of brain stem structures.