Hands usually cold, then one or several fingers get red hot (no pain). raynauds? erythromelalgia? seems to be worse since started ritalin (methylphenidate). related?

Ritalin (methylphenidate) side effect?: An uncommon, if not rare, side effect of Ritalin (methylphenidate) is circulation problems in fingers and toes, eg, Raynaud’s Phenomenon. Symptoms reverse when med is discontinued. Discuss with prescribing doctor without delay. See: http://www.fda.gov/Safety/MedWatch/SafetyInformation/ucm359945.htm I hope this helps. Best wishes.