Ten migraine headache subjects and 10 non-migraine subjects were divided equally into two groups: a progressive relaxation group and a finger temperature biofeedback group. Finger temperature, temporal artery pulse amplitude and forehead blood flow were monitored for all subjects during two baseline and six treatment sessions. The biofeedback group achieved greater (albeit low magnitude) increases in finger temperature than the relaxation group, but no improvement in headache activity was obtained. However the relaxation group improved significantly in terms of headache intensity. There was no significant difference in the ability to achieve finger temperature control, nor in stability point temperatures, between the migraine and non-migraine subjects. No systematic relationship was found between finger temperature, forehead blood volume and temporal artery pulse amplitude. Possible mechanisms of the therapeutic effects of finger temperature training are examined in the light of these results. |