Hi. I have had muscle twitches/fasciculations since about August of 2011. I'm so scared it could be MS....I have them mostly in my legs, but sometimes in other places too. I always tell myself that I'm fine, but for some reason I keep on thinking about MS nonstop and don't know what to do. I have Tourette's Syndrome, though. Can Tourette's cause these twitches?? Also, I've heard medications for ADHD can cause them as well. I'm on Intuniv, though, and idk if that could possibly cause my fasciculations. Right now I'm also taking Effexor for my anxiety, but started it in like November of last year, so I know that can't be the thing causing them. Could these twitches possibly be the early signs of MS?!?