Migraine Headaches Support Group
Migraine is a neurological disease, of which the most common symptom is an intense and disabling episodic headache. Migraine headaches are usually characterized by severe pain on one or both sides of the head and are often accompanied by photophobia (hypersensitivity to light), phonophobia (hypersensitivity to sound) and nausea.
On a separate note, at least one form of ergotomine, another migraine abortive, is available at WalMart and via the other $4 generic programs. As Medicaid limites you to 9 Imitrex per month, you may want to talk with your doctor about ergots and perhaps your doctor can also give you a prescription for ergotamine and you can get it filled at WalMart or through one of the other $4 generic programs (you shouldn't have to show any insurance card) and thus have some additional migraine specific rescue medication available.
The full Walmart $4 formulary list is available at: http://i.walmart.com/i/if/hmp/fusion/genericdruglist.pdf
Good luck!