Benign hot bath-related headache

We describe three cases of women with hot bath-related headache who reporte d that their severe paroxysmal headache could be provoked by pouring hot wa ter over themselves or by soaking in a hot bath. In one patient, the headac he was also brought on by exposure to cold wind. Another patient had headac hes after she dived into a pool and started swimming. Neurological examinat ion, routine laboratory tests, electroencephalography, and brain imaging sh owed no abnormality in any of the patients. Hot bath-related headache is a benign headache unassociated with a structural lesion.