I should have mentioned this but I take concerta 36mg a day, and sometimes a 10mg of normal ritalin later in the day. I noticed on the days I took concerta late I felt better, so I didn't take a few days ago and I felt noticibly better. I also noticed my hands stopped feeling so cold. I did not take the 36mg concerta pill the day after again and felt pretty good. So I have just been taking the 10mg pill and half another pill(so 15mg total) and I've been feeling a bit better. I may have to take 20mg as I think I'm feeling some withdrawal side effects(being sleepier than usual + a slight headache).

So if you taking ritalin after a concussion, try lowering your dose. I'll post back on my status in a few days or weeks.