ibromyalgia
"I've been on every anti-depressant, preventative migraine drug, and odd and sundry 'experiments' for fibromyaligia in many years. As a long time insomniac, I tried Trazodone. The dose necessary for sleep is too much for me. I feel groggy and drop off to sleep the next day. However, if I take half of a dose with an anti-anxiety medicine, I'll sleep. 
The truly wonderful discovery is that for the first time, I rarely have the really bad and impossible to exorcise migraines I've had since childhood, now that I'm taking the modest dose of Trazodone! Often, they can be knocked out with a prescription painkiller, and only rarely do I need to resort to the Imitrex 'family' to rid myself of them! My doctor is surprised, but it's surely worth a try!"