This study investigated effects of applying cognitive-behavioral group therapy on recurrent headaches. Among Shiraz University female students complaining of headaches, 20 patients, each reporting either migraine or tension-type headaches and who met the 1988 International Headache Society diagnosis criteria for migraine and tension-type headaches, formed two groups. Analysis showed cognitive-behavioral group therapy decreased headache index significantly. Therapeutic response patterns on dependent variables were similar for patients with migraines and those with tension-type headaches.