The factor that allows hemicrania continua and its exacerbations to be differentiated from migraine and cluster headache is that hemicrania continua is completely responsive to indomethacin.
12.
A variant on hemicrania continua has also been described, in which the attacks may shift sides, although meeting the above criteria in all other respects.
13.
Episodic paroxysmal hemicrania attacks occur at least twice a year and last anywhere from seven days to a year with pain free periods of a month or longer separating them.
14.
Migraine without aura also referred to as a " common migraine ", ( previously known as " hemicrania simplex " ) is a specific neurological disorder characterized by recurrent, aura.
15.
Treatment for TACs varies depending on the exact type, but can include medication such as Indomethacin ( in the case of chronic paroxysmal hemicrania ) or acute and prophylactic therapy ( in the case of cluster headache ).
16.
The term'chronic paroxysmal hemicrania'was first used in 1976 by Sjaastad to describe a condition seen in two of their patients who were experiencing repeated solitary and limited daily headache attacks on only one side of the cranium.
17.
CH has alternately been called erythroprosopalgia of Bing, ciliary neuralgia, erythromelalgia of the head, Horton's headache, histaminic cephalalgia, petrosal neuralgia, sphenopalatine neuralgia, vidian neuralgia, Sluder's neuralgia, Sluder's syndrome, and hemicrania angioparalyticia.
18.
Included in the differential diagnosis of a new onset nighttime headaches in the elderly is drug withdrawal, temporal arteritis, Sleep apnea, oxygen desaturated, Pheochromocytoma, intracranial causes, primary and secondary neoplasms, communicating hydrocephalus, subdural hematoma, vascular lesions, migraines, cluster headaches, chronic paroxysmal hemicrania and hypnic headache.
19.
Amongst the types of headaches experienced are both chronic and episodic migraine, and more uncommonly various unilateral headaches; primary stabbing headache, short-lasting unilateral neuralgiform headache attacks with conjunctival injection and tearing ( SUNCT )-another type of stabbing headache characterized by short stabs of pain-, cluster headache, and hemicrania continua ( HS ).
