Does atrial fibrillation cause shivers?
Patient: My brother has A fib and has had it for nearly a year now....procedures to  corrct it haven't worked.  He has been experiencing severe chills lately....needing to go under an electric blanket to get comfort. No fever. The chills last maybe an  hour or two and then disappear. Could this be related to the meds he is on or the A fib??  The chills leave him "wasted" and no energy. Doctor: Hi!, Firstly I wanted to know his age.In any case Chills (Shivers) could be due to various reasons, few of which could be Fits (Epilepsy) - If your brother is of younger age, of some sort of infection in body.Yea atrial fibrillation itself could bresent as shivers in case he is having an episode of tachycardia (Fast heart rate) - persiving it to be chills / shivers.Other reason could be if really having A fib, there could be decreased blood circulation to brain - causing generalised weakness and giddiness / tiredness.I would suggest you to consult a Cardiologist at the earliest