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The International Classification of Headache Disorders (ICHD) is a detailed hierarchical classification of all headache-related disorders published by the International Headache Society. [1] It is considered the official classification of headaches by the World Health Organization , and, in 1992, was incorporated into the 10th edition of their ...
Chronic paroxysmal hemicrania. Chronic paroxysmal hemicrania ( CPH) is a severe debilitating unilateral headache usually affecting the area around the eye. It normally consists of multiple severe, yet short, headache attacks affecting only one side of the cranium. Retrospective surveys indicated that paroxysmal hemicrania was more common in ...
Prevalence. ~15% [ 10] Migraine ( UK: / ˈmiːɡreɪn /, US: / ˈmaɪ -/) [ 11][ 12] is a genetically influenced complex neurological disorder characterized by episodes of moderate-to-severe headache, most often unilateral and generally associated with nausea and light and sound sensitivity. [ 1] Other characterizing symptoms may include ...
Intractable pain. Intractable pain, also called intractable pain syndrome ( IPS ), is a severe, constant, relentless, and debilitating pain that is not curable by any known means and which causes a house-bound or bed-bound state and early death if not adequately treated, usually with opioids and/or interventional procedures.
Hemicrania continua. Hemicrania continua ( HC) is a persistent unilateral headache that responds to indomethacin. It is usually unremitting, but rare cases of remission have been documented. [ 1] Hemicrania continua is considered a primary headache disorder, meaning that another condition does not cause it.
Acephalgic migraine. Acephalgic migraine (also called migraine aura without headache, amigrainous migraine, isolated visual migraine, and optical migraine) is a neurological syndrome. It is a relatively uncommon variant of migraine in which the patient may experience some migraine symptoms such as aura, nausea, photophobia, and hemiparesis, but ...
New daily persistent headache ( NDPH) is a primary headache syndrome which can mimic chronic migraine and chronic tension-type headache. The headache is daily and unremitting from very soon after onset (within 3 days at most), usually in a person who does not have a history of a primary headache disorder. The pain can be intermittent, but lasts ...
Cluster headache. Cluster headache is a neurological disorder characterized by recurrent severe headaches on one side of the head, typically around the eye (s). [ 1] There is often accompanying eye watering, nasal congestion, or swelling around the eye on the affected side. [ 1] These symptoms typically last 15 minutes to 3 hours. [ 2]