thought his left arm had locked; pain in his left arm/arms are killing me/arms is hurting so bad; has got a little tearing pain in the arm in the muscle of his left arm; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 58-year-old male patient received bnt162b2 (BNT162B2), administered in arm left, administration date 06Mar2021 10:00 (Lot number: EN6198) at the age of 58 years as dose 1, single for covid-19 immunisation. Relevant medical history included: "Asthma" (ongoing), notes: diagnosed 10-15 years ago; "high blood pressure" (unspecified if ongoing), notes: diagnosed 10-15 years ago; "Leukaemia", start date: Oct2020 (ongoing); "legally blind" (unspecified if ongoing). There were no concomitant medications. The following information was reported: JOINT RANGE OF MOTION DECREASED (non-serious) with onset 10Mar2021, outcome "not recovered", described as "thought his left arm had locked"; PAIN IN EXTREMITY (non-serious) with onset 10Mar2021, outcome "not recovered", described as "pain in his left arm/arms are killing me/arms is hurting so bad"; MYALGIA (non-serious) with onset 10Mar2021, outcome "not recovered", described as "has got a little tearing pain in the arm in the muscle of his left arm". The events "thought his left arm had locked", "pain in his left arm/arms are killing me/arms is hurting so bad" and "has got a little tearing pain in the arm in the muscle of his left arm" were evaluated at the emergency room visit. Relevant laboratory tests and procedures are available in the appropriate section.  Additional Information: Patient stated that, he went and took the 1st dose of the Pfizer COVID vaccine last Saturday 06Mar2021 but began having complications after the shot and went to the hospital emergency room on Thursday 11Mar2021 in the morning and thought his left arm had locked which is the arm he got his Pfizer COVID shot in. He did not stay overnight in the hospital but was just seen in the emergency room. He was in the emergency room, they took Xrays and told him they did not see anything on the Xrays but caller stated he had so much pain; really going through it and the pain was ongoing and seems like the same as when the pain began. The pain in his left arm started on Wednesday night 10Mar2021. Patient was asked if he had any treatment for the reported events and states the emergency room did do the Xray and told him his arm should unlock within 24 hours or 48 hours and states his arm unlocked a little bit but he feel like his arm has got a little tearing pain in the arm in the muscle of his left arm that he got the Pfizer COVID shot in. He stated that, he got the 1st dose of the Pfizer COVID vaccine on 06Mar2021 and goes back for the 2nd dose on 28Mar2021. He stated that he was legally blind too and states he was diagnosed as being legally blind before he got the Pfizer COVID Vaccine; states his wife has to go get her glasses to read from his patient card for the Pfizer COVID Vaccine. Patient stated, he also wanted to know if there is anything else he should do in terms of treatment, states he also wanted to know if there is anything else he should do in terms of treatment, referred to his HCP regarding treatment recommendations or medical advice. Patient wanted to call, actually took the vaccine shot, first shot, his arm are killing him and yes, he took his shot Saturday and he had to go to the emergency room on Friday and they did X-ray and no stroke nothing like that but his arms is hurting so bad. He meant it was like a tear something in there, he does not know. He could barely pick it up and he wanted to know what he can do. Patient stated that he was taking Pfizer COVID Vaccine for health issues. Prior Vaccinations (within 4 weeks) were none. No additional vaccines administered on same date of the Pfizer suspect.  No follow-up attempts are possible. No further information is expected.