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Trigeminal autonomic cephalalgias: fancy term or constructive change to the IHS classification?

Correspondence to:
Correspondence to:
Prof P J Goadsby
Institute of Neurology, Queen Square, London WC1N 3BG, UK; peterg@ion.ucl.ac.uk

Keywords: SUNCT; cluster headache; paroxysmal hemicrania

The first 150 words of the full text of this article appear below.

For the neurologist faced with the day to day grind of clinical work a change to terminology may seem like the academics "at it again". I will try to set out this change and illustrate a physiology that may be attractive to understand, and hopefully one that enhances, clinical practice. Appreciating the physiology of the trigeminal-autonomic reflex can make patients presenting with varying degrees of cranial autonomic activation, such as lacrimation, conjunctival injection, nasal congestion or rhinorrhoea and the like, comprehensible at the bedside.¹

The trigeminal autonomic cephalalgias (TACs) is a grouping of headache syndromes recognised in the second edition of the International Headache Society (IHS) classification.² The term was coined to reflect a part of the pathophysiology of these conditions that is a common thread—that is, excessive cranial parasympathetic autonomic reflex activation to nociceptive input in the ophthalmic division of the trigeminal nerve.¹ The TACs are . . . [Full text of this article]

This article has been cited by other articles:

				A. S. Cohen, M. S. Matharu, and P. J. Goadsby Short-lasting unilateral neuralgiform headache attacks with conjunctival injection and tearing (SUNCT) or cranial autonomic features (SUNA)--a prospective clinical study of SUNCT and SUNA Brain, October 1, 2006; 129(10): 2746 - 2760. [Abstract] [Full Text] [PDF]

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