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.