Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology
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Clinicians long have suspected that symptomatic medications taken by those with headache can cause rebound or drug-induced headaches if overused. This problem has been considered in the classification of headache disorders made by the International Headache Society. ⋯ Sustained improvement following treatment for drug-induced headache can be difficult to achieve and at the moment there is no consensus on what approach may be more effective, in particular regarding outpatient or inpatient treatment withdrawal strategy. Clinical aspects and different therapeutic strategies for chronic daily headache patients with medication overuse are considered.
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In the International Headache Society (IHS) classification of 1988, chronic daily headache (CDH) forms are not exhaustively categorized. The forthcoming revision of the classification will include a number of CDH forms that had been reported prior to 1988 or have been identified after that date. ⋯ Hypnic headache will be included in Group 4 ("Other primary headaches"). No additions will be made to the new IHS classification for forms such as new daily persistent headache (NDPH) and cervicogenic headache as proposed by Sjaastad.
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Hemicrania continua (HC) is an uncommon primary headache syndrome. The main features of HC are: (i) strict unilaterality of the pain (moderate, fluctuating, relatively long-lasting); and (ii) absolute response to indomethacin. ⋯ HC will be addressed in the 2003 revision of the International Headache Society (IHS). In this paper we review the clinical features, classification and treatment of HC.