What causes a cluster headache?
i have had one for a few days i would just like to know what may have caused it
Public Comments
1. ..."cluster phucking" !2. I used to get these all the time and migraines also. They don't really know what causes them but this is a good article:
http://www.emedicinehealth.com/cluster_headache_faqs/page3_em.htm
