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1. headache on one side of the head.
2. a developmental anomaly consisting of absence of half of the cranium.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


(mī'grān, mi-grān'),
A familial, recurrent syndrome characterized usually by unilateral head pain, accompanied by various focal disturbances of the nervous system, particularly in regard to visual phenomenon, such as scintillating scotomas. Classified as classic migraine, common migraine, cluster headache, hemiplegic migraine, ophthalmoplegic migraine, and ophthalmic migraine.
[through O. Fr., fr. G. hēmi- krania, pain on one side of the head, fr. hēmi-, half, + kranion, skull]
Farlex Partner Medical Dictionary © Farlex 2012


An intense idiopathic, episodic, uni/bilateral, pulsating (vascular) headache, often exacerbated by physical activity, linked to dilation of branches of the carotid artery.

Clinical findings
Classic migraines are most common in women age 30–49 and in lower income households, and appear to have a hereditary component. Migraines first appear before puberty and remit at menopause; they may be accompanied or preceded by nausea, vomiting, phonophobia, and photophobia or other visual phenomena (e.g., hemianopia, scotomas, fortification phenomenon).

Analgesics (e.g., aspirin, acetaminophen, propoxyphen, codeine), NSAIDs (e.g., naproxen, ibuprofen, ketorolac), 5-HT agonists (e.g., ergotamine, sumatryptan), dopamine antagonist (e.g., chlorpromazine, metoclopramide).
Avoid precipitating factors; if conservative measures fail and the attacks are > 1/week, pharmacologic prophylaxis is indicated, which may be 5-HT influencing (e.g., amitriptyline, methysergide1), β-adrenergic antagonist (e.g., propranolol, metoprolol), calcium channel blocker (e.g., nifedipine, verapamil) or NSAIDs (e.g., ketoprofen, mefenamic acid, aspirin).
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.


A symptom complex occurring periodically and characterized by pain in the head (usually unilateral), vertigo, nausea and vomiting, and photophobia. Onset of pain may be preceded by a warning (i.e., aura), often consisting of bilateral scintillating scotomas. Subtypes include classic migraine, common migraine, cluster headache, hemiplegic migraine, ophthalmoplegic migraine, and ophthalmic migraine.
Synonym(s): hemicrania (1) , sick headache.
[through O. Fr., fr. G. hēmi-krania, pain on one side of the head, fr. hēmi-, half, + kranion, skull]


The unilateral headache characteristic of migraine.
Synonym(s): hemicrania (2) .
[hemi- + G. kephalē, head, + algos, pain]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
Classification of Headache Type of Head Ache Percentage Total Number (%) and (Gender) Tension type headache (TTH) 69.2% 63 (F-43) Migraine without aura (MO) 17.5% 16 (F-11) Medication over use headache (MOH) 3.2% 3(F-1) Migraine and TTH (Coexisting) 3.2% 3(F-1) Cluster headache 2.1% 2 (F-0) Occipital neuralgia 2.1% 2 (F-0 Hemicrania continua 1.09% 1 (F-0) Supra orbital neuralgia 1.09% 1 (F-0) Table 2.
Less common primary headache disorders Hemicrania continua, a rare cause of chronic daily headache, is unilateral, without shifting sides, and the intensity is moderate to severe--and unrelenting.
Chronic paroxysmal hemicrania and hemicrania continua responding to topiramate: two case reports.
The recent IASP taxonomy includes epilepsy in the list of generalized syndromes of chronic pain and includes chronic paroxysmal hemicrania--remitting form and hemicrania continua in the list of the chronic pain conditions [1].
KEY WORDS: Paroxysmal Hemicrania, Trigeminal Autonomic Cephalgias, Indomethacin, Lamotrigine.
ARSENICUM ALBUM Typically used for hemicrania associated with weakness, restlessness and an icy feeling in the scalp, the pain of an Arsenicum headache is often burning in character.
From hemicrania lunaris to hemicrania continua: An overview of the revised International Classification of Headache Disorders.
Paroxysmal Hemicrania A headache that affects only one side of the head where there is intense pain around the eye lasting 5 to 30 minutes and occurring multiple times per day.
TAC consists of three separate presentations: cluster headache, paroxysmal hemicrania and SUNCT (short-lasting unilateral neuralgiform headache with conjunctival injection and tearing).
Hippocrates used the word "hemicrania" to describe the unilateral headache that often marks the beginning of the headache phase of what we call migraine.
-- The incidence of hemicrania continua might be underestimated because diagnosis of patients with two superimposed unilateral headaches is a clinical challenge, Dr.