ibromyalgia
"I've had fibromyalgia for 14 years.  I was prescribed Gabapentin and within days I had a horrifying headache and it felt like my brain was going to explode.  I have the same issue with Lyrica, Cymbalta, Savella and amitryptiline.  Maybe my brain chemistry doesn't like to be altered with this type of med?  I only know the reaction scared me badly and the only medication I can use for my fibromyalgia is Tramadol.  Fortunately it keeps the edge off my pain and I can work full time.  If only it would work on the soul crushing fatigue! :-)"