The Florida Center for Headache and Sports Neurology has a current ongoing open label study on the use of testosterone in episodic and chronic cluster headache. If you are interested in paraticipating please call 1-877 OI THROB or 772-337-7272. As this study is investigator driven and does not have any pharma or federal support we cannot offer any reimbursement, only free care. I plan on presenting the results at the IHS meeting in Boston next year. Dr. Frank Conidi Director.