Here's something I posted a few weeks ago in response to a similar topic. It's an overview of many of the different types of migraine medications. Keep in mind that it's written as a response to someone else, so it make be written a bit awkwardly for this response:
"For example, I responded moderately well to zonegran, but not to topamax, even though they're both antiseizure meds. Then you also have bipolar type drugs like divalproex (aka valproic acid, depakote), lamictal, and lithium. Antidepressants and anti-inflammatory medications can also be used as preventatives, beyond cymbalta and ibuprophen, naproxen. There are tricyclic antidepressants like neurontin and elavil; SSRIs like lexapro, zoloft, paxil, and prozac; SNRIs like effexor and cymbalta; MAOis (quite strong) like nardil, parnate, and emsam; and others like Wellbutrin, Zyban, and others. As for antiinflammatory medications, ibuprofen and naproxen are fairly weak and are rarely advised to take daily. Some strong ones that are sometimes taken daily are diclofenac, etodolac (lodine), ketorolac, indocin, and relafen. There are a few other strange ones like methergine, mexilitine (oral lidocaine) and various herbal remedies. Muscle relaxants are sometimes used to treat migraine as well. Beta blockers and Calcium channel blockers can be used as well.
Also there are a variety of other triptans: Maxalt, Amerge, Zomig, Axert and Frova. I found that some work better than others. Many of them didn't work at all and a few helped a bunch more for me. And as for other abortives there are strong inflammatory ones like todadol, strong antipsychotics like zyprexa, haldo, droperidol. And things like DHE, lidocaine nasal spray, etc. You can try oral steroid tapers, since you said that worked. Plus Botox injections, nerve stimulators, etc."
Also, there are many inpatient IV infusion treatments like Lidocaine, Ketamine and DHE cocktails.
Anyway, if youu haven't heard of or tried some of these, I hope it shows you that you have more options than you might realize. Good luck CIndy, I'll be hoping for you.
DX: NDPH, Recovered CRPS
RX: Lamictal, Abilify, Verapamil, Provigil, Clonazepam, Ambien CR, Rozerem, Emsam, Namenda
PRN: Haloperidol, Zyprexa, Lodine, Zofran, Oxycodone