"Results from quickly eating or drinking very cold substances.
REFFERED PAIN THEORY:
Glossopharyngeal nerve
This is sensory to the pharynx
palate
tonsils and also the dura mater.
When you put your hand into a bucket of ice water
it hurts. In the same way
when you put something cold against your pharynx or palate
you feel pain.
Your brain interprets this pain
as coming not from where the ice cream is
but from the dura mater covering your brain.
The Trigeminal nerve
This transmits the signal to the brain. Since this nerve also senses facial pain
the brain assumes that the signal it receives is coming from your forehead
and interprets this as a headache.
VASCULAR THEORY
caused by a dramatic and sudden increase in blood flow through the brain's anterior cerebral artery. "