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Title: The characteristics of head pain in response to an experimental cold stimulus to the palate: An observational study of 414 volunteers.
Author: de Oliveira DA, Valença MM.
Journal: Cephalalgia; 2012 Nov; 32(15):1123-30. PubMed ID: 22914815.
Abstract:
OBJECTIVE: The objective of this article is to study the characteristics of headaches following an experimental cold stimulus and evaluate whether the ICHD-II criteria for headache attributed to ingestion or inhalation of a cold stimulus (HICS) are adequate for the diagnosis of the headache induced by ice on the palate area (ice-induced headache (IH)). RESULTS: One hundred and fifty-three out of 414 (37.0%) individuals tested had IH, but only 77/153 (50.3%) satisfied the ICHD-II criteria. The frontal (60.8%) and temporal (48.4%) areas were the most affected ones, with bilateral (77.1%) predominance, often of the pulsatile type (41.2%). One hundred and forty-seven out of 379 (38.8%) individuals who presented with a previous history of primary headache presented with IH, while only six out of 35 (17.1%) who had no history of previous headache reported pain in the test (OR 3.063, 95% CI 1.241-7.557). The ice-induced headache test was positive in 115/240 (47.9%) of the migraine sufferers and in 32/139 (23%) of the tension-type headache sufferers (OR 3.076, 95% CI 1.924-4.918). CONCLUSION: IH is predominantly frontotemporal, bilateral and throbbing, most commonly affecting migraine sufferers, and the ICHD-II criteria are insufficient for classifying all individuals. We should, however, recommend caution regarding such a generalization from our findings with experimentally provoked cold stimulus headache to cold stimulus headache in general (i.e. HICS, ICHD-II).

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