Posted by Robin (208.153.173.71) on October 11, 1999 at 15:20:08:
Oxygen therapy worked for me during two bouts of cluster headaches. But this time I had rebound headaches within 2 hours of using the oxygen and then on the third try with oxygen, it did not work at all even though I used it at the beginning of the headache. Has anyone else had this problem with oxygen?