cluster headaches
"I've been dealing with episodes of cluster headaches for 30 years. Nothing has ever made a dent in the pain besides this and Zomig nasal spray. The slight pain of the injection is a very small price to pay to relieve the crushing pain of a cluster headache. For me the trick for both medicines is to catch it as early as possible, before the headache is full blown. I'm never more than a minute or two away from a dose. Besides feeling a little weak afterwards (which would have been worse with the headache anyway), so far I don't have any real side effects."