I have a number of health problems including diagnosed atrial fibrillation and essential tremor ( I am taking Bisprolol ) the problem I am experiencing now is numbness in my left hand pinky and ring finger and sometimes my scalp as well , I suffered a bit of dizziness , a bit of ? vision wandering ? and the electrical shock type feelings don t seem to be abating is this connected ? a medication side effect ?
There is no way to know what it is by your story, but it is neither related to your fibrillation nor tremor.  Timid most likely a pinched nerve in the necks as this is the most common cause of your symptoms, but this needs to be confirmed by a visit to your doctor