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Cephalalgia. 1994 Dec;14(6):447-50; discussion 394-5.

The blink reflex in chronic tension-type headache, migraine, and cervicogenic headache.

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Department of Neurology, University Hospital of Trondheim, Norway.


R1 and R2 blink reflex latencies were investigated blind in 10 patients with cervicogenic headache, 11 patients with chronic tension-type headache, 11 patients with migraine, and 9 headache-free controls. There were no R1 or R2 latency differences between the four groups. The latency of R1 increased significantly with headache duration in tension-type headache patients. Shorter R1 latencies were found on the symptomatic side than on the non-symptomatic side in cervicogenic headache patients. The results suggest that a state of hyperactivity may be present in the ipsilateral trigeminal nucleus in cervicogenic headache. Hypoactivity, however, may develop over time in tension-type headache.

[Indexed for MEDLINE]

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