ibromyalgia
"I switched to Savella from Cymbalta and have been taking it for less than a week.  I am currently on the 25 mg twice daily dose in the titration pack.  This medicine significantly helps with my pain and I do not have the cloudiness in thought that I did on Cymbalta, but that's where the good ends.  Every night I have the most vivid, terrifying nightmares of my life and I wake up completely drenched in sweat after only a few hours of sleep. Sometimes when I wake up, my entire body is numb, I am paralyzed, and I experience visual hallucinations.  I have lost all motivation to do my daily activities and I spend most of the day napping.  I am getting tremors and occasional involuntary muscle movements.  I have severe constipation and no appetite."