whole right arm it was aching really bad; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 86 year-old male patient received bnt162b2 (BNT162B2), administered in arm left, administration date 02Apr2021 10:00 (Batch/Lot number: unknown) at the age of 86 years as dose 2, single for covid-19 immunisation. Relevant medical history included: "legally blind" (unspecified if ongoing), notes: Caller stated he is legally blind and would prefer not to provide his mailing and email address. There were no concomitant medications. Vaccination history included: Bnt162b2 (Dose: 01, Events: Numbness in right hand, numbness in his left hand occasionally/Numbness in fingers, whole right arm it was aching really bad), administration date: 12Mar2021, when the patient was 86 years old, for Covid-19 immunization, reaction(s): "Numbness in right hand, numbness in his left hand occasionally/Numbness in fingers", "whole right arm it was aching really bad". The following information was reported: PAIN IN EXTREMITY (non-serious) with onset Apr2021, outcome "not recovered", described as "whole right arm it was aching really bad". The event "whole right arm it was aching really bad" was evaluated at the physician office visit. Therapeutic measures were taken as a result of pain in extremity.  Additional information: There was no family medical history relevant to adverse event. Patient did not receive any other vaccines within 4 weeks to the COVID vaccine. Caller stated he is calling about the Pfizer COVID 19 shot. Caller stated shortly after he got the first COVID 19 vaccination on 12Mar2021 he started having problems where he would wake up at night and his right hand would be asleep and did not think anything of it since it had happened once in a while over the years. Caller stated he has had numbness in his fingers and the right hand only and then would have problems during the daytime where he would be sitting around and notice like the tip of his thumb, whole hand would go numb, or two fingers would go numb that would last several minutes up to 10 mins and then would slowly disappear. Caller stated this started getting worse a week in a half ago or 2 weeks. Caller stated then in his whole right arm it was aching really bad and that lasted for about 15, 20, or 25 minutes and anyways that continued to get worse but has not happened during daytime. Caller stated last night he tried using a heating pad, tried sleeping in a chair, and tried to apply vibrations since. it was so bad. Caller stated this started at 2 o clock this morning and was still hurting at 6 o clock and he thought he would have to go to the emergency room so he got up and showered and shaved and then all the symptoms disappeared and he was back to normal and its getting pretty bad. Caller stated his doctor did not think it could be with the vaccine. Caller stated he is calling to see if these symptoms had been reported since he is worried about the extreme pain in his right arm he has when the numbness happens. Caller stated the first vaccine shot was 12Mar2021 and he would say this started sometime a week or so later. Caller stated one more thing he has also had numbness in his left hand occasionally but it is very seldom. whole right arm it was aching really bad: Caller stated this probably started in Apr2021 as it came on later. numbness in his left hand occasionally: Caller stated he is not sure when exactly this started or ended. Caller confirmed that he could not remember the month of when it first happened or when this occurred last but it was sometime in 2021. Caller stated he is not sure if he has recovered completely from this. Treatment: heating pad, tried sleeping in a chair, and tried to apply vibrations. COVID 19 vaccine: Caller stated he received the second dose of the vaccine in his left arm as an injection on 02Apr2021.  No follow-up attempts are possible; information about lot/batch number cannot be obtained. No further information is expected.