HEMICRANIA
\hˌɛmɪkɹˈe͡ɪni͡ə], \hˌɛmɪkɹˈeɪniə], \h_ˌɛ_m_ɪ_k_ɹ_ˈeɪ_n_iə]\
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A subtype of vascular headaches characterized by periodic unilateral pulsatile headaches which begin in childhood, adolescence, or early adult life and recur with diminishing frequency during advancing years. The two major subtypes are CLASSIC MIGRAINE (i.e., migraine with aura) and COMMON MIGRAINE (i.e., migraine without aura). Migrainous episodes may be associated with alterations in cerebral blood flow. (From Adams et al., Principles of Neurology, 6th ed, p172)
By DataStellar Co., Ltd
By William R. Warner
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Pain, confined to one half the head. It is almost always of an intermittent character; -at times, continuing only as long as the sun is above the horizon; and hence sometimes called Sun-pain, - and is cured by cinchona, arsenic, and the remedies adapted for intermittents.
By Robley Dunglison
By Willam Alexander Newman Dorland