... about one month giving me several hours of excruciating headache a day. I use steroid (prednizone) to break the cycle but until it's broken I use imitrex injection to get rid of the pain. The injection works within minutes and removes the pain completely. The question I have is: can I use imitrex injections for as long as I have the headache (in my case over a month) instead of taking steroids? In other words, is there a serious danger in a prolong every day use of the injection?