At dinner the other night, I was introduced to a young Ball State University student who suffers from similar chronic migraine attacks. Whereas my migraines tend to last up to 4 days and occur in this pattern around twice a month, hers start with one several-month-long series, in which her migraines seem to accumulate into one longer-lasting attack.
Unlike many migraine sufferers, however, she found a way to "cure" her attacks for 6 months at a time.
She traveled to Michigan Head-Pain Neurological Institute (MHNI) where neurologists and doctors performed a Radio Frequency Denervation (RFG). There's some information out there about RFG, but there seems to be more about Radio Frequency Ablation, which I believe is the same - or a similar - treatment. Here's how it works:
RFG is typically used for arthritis and back pain, but now is being used in some areas as a treatment for migraines.
There are many sufferers who say this treatment definitely works for a short period of a time, but is far superior to regular medicinal treatments. Many sufferers who seek treatment over painkillers try this approach.
Of course, there are naysayers. It's important to remember some treatments may work for some and not for others.
Links on RFG/Ablation
Episodes and Information Related to Migraines.