A new cluster headache precipitant: increased body heat.

Blau, J N; Engel, H O · Lancet · 1999

case_series · Level IV

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Abstract

Exercise, a hot bath, or elevated environmental temperature provoked cluster headaches, within 1 h, in 75 out of 200 patients. This new observation accords with recognised precipitants--alcohol, histamine, and gyceryl trinitrate--perhaps via generalised vasodilatation or hypothalamic activation.

Medical subject headings