Cephalalgia : an international journal of headache
-
In eight patients with chronic paroxysmal hemicrania (CPH), forehead sweating was measured after various provocation tests-body heating, exercise, and subcutaneous pilocarpine administration (0.1 mg/kg body weight). Evaporation was measured bilaterally on the forehead with an Evaporimeter (in g/m2/h). This was carried out in a thermo room under standardized conditions. ⋯ In cluster headache there may be denervation supersensitivity of the sweat glands in the forehead of the symptomatic side. The present study does not therefore provide evidence for supersensitivity phenomena which could explain the homolateral forehead sweating increase seen during attacks in some CPH patients. The localized sweating increase in the forehead during attacks of CPH may possibly be a result of direct sympathetic stimulation.