Losing strength in his right leg; Muscle pain; Joint pain; Muscle spasms in his neck because he has neck pain too; Muscle spasms in his neck because he has neck pain too; His leg kept getting worse; He just cant walk anymore; Leg is swollen; This is a spontaneous report from a contactable consumer (patient) via Pfizer.   A 60-year-old male patient received bnt162b2 (BNT162B2), dose 1 via an unspecified route of administration on 17Mar2021 (Batch/Lot Number: ER6208) as single dose at the age of 60-year-old for COVID-19 immunisation.  Medical history included disability. The patient's concomitant medications were not reported.  The patient experienced losing strength in his right leg in Mar2021, his leg kept getting worse in 2021, he just can not walk anymore in 2021, leg is swollen in 2021, muscle pain in Mar2021 with, joint pain in Mar2021, muscle spasms in his neck because he has neck pain too in 2021.   The events losing strength in his right leg, his leg kept getting worse, he just can not walk anymore and leg is swollen were assessed medically significant. The patient underwent lab tests and procedures which included magnetic resonance imaging: leg is swollen in 2021, X-ray: nothing showed up in 2021. Therapeutic measures were taken as a result of losing strength in his right leg, muscle pain, joint pain.  The course of events was as follows:  Around 21 Mar2021 or 22Mar2021, he had problems with his leg. Patient was experiencing muscle pain and joint pain, losing strength in his right leg. Patient stated that was a problem. Patient had an MRI and X-ray that looked to see what the problem was. Patient received second dose on 14Apr2021. Patient hasn't even seen his prescribing Healthcare Professional yet, until Monday. He hasn't worked in five years, he's been on disability. He wanted to get off disability so he went and got a job. He started the job 28Mar2021 and everyday, his leg kept getting worse. He had to leave the job the other day because he just cant walk anymore, he has to do a lot of walking on the job. He called the doctor and told them something was wrong with his leg, they took an x-ray and nothing showed up. They did an MRI and all it shows was that his leg was swollen, no bones or nothing is broken. He was looking at Pfizer paperwork that a facility gave him and the two of symptoms are on there, so this problem was related to the vaccine. He never hurt his right leg, never had a problem until he got this shot. He was losing all his strength in his right leg, all the pain. They have been giving muscle relaxers and ibuprofen and they did not seem to work or be doing anything. First, he went to the emergency room and they gave him Ibuprofen 600 mg tablets and they gave him Cyclobenzaprine 10mg tablets. They said that he was experiencing muscle spasms in his neck because he has neck pain too. So he made an appointment with his family doctor, which there was no openings and had to see another PA. He did not know the HCP last name, but he/she was a PA in the office and he saw him/her, who requested the x-ray, and he had the x-ray done and saw him/her again and nothing showed up so he/she requested an MRI. He went to the hospital to have that and nothing showed up except his leg was swollen. Now they are going to send him to a bone specialist, but there was no reason to because now he stated he knew what was causing this. Patient took Cyclobenzaprine, 10 mg, three times a day by mouth. He states it did not seem to do nothing. Patient verified it was a prescription from the pharmacy:  NDC: 0137517-19674, unsure of LOT, expiry date. The quantity of the first bottle was 15 but he went through that already and he got a new bottle that has 42 in it. This current bottle he has 12 or 13 left. The first bottle was completely gone. Patient took Baclofen 5mg tablets, three times a day: morning, noon, and night. They were not doing anything either, well he did not think they are. Patient provided NDC: 0135391-19674. The first muscle relaxer they gave him, the 10mg one, he took it that day, it knocked him out. Caller states when he saw his doctor, he said he can not take that one while he works, he will take it at night time, so that is why the doctor gave him the other muscle relaxer, Baclofen, to take while he worked during the day. He took one muscle relaxer at night of one kind and the other kind he takes the ones that won't take him out as much. Patient stated that he had to leave his job because he cannot do it, he cannot walk. Patient took Ibuprofen (NDC: 0139246-19674, to use before 22Apr2022) 600mg, by mouth, three times a day. He took one with the muscle relaxers. Patient took verified all medications Cyclobenzaprine; Baclofen; Ibuprofen were prescriptions from the pharmacy. The outcome of muscle pain and joint pain, losing strength in his right leg, his leg kept getting worse, was not recovered of he just can not walk anymore on, leg is swollen, neck pain was unknown. Reporter seriousness for muscle pain and joint pain, losing strength in his right leg and neck pain was unspecified Patient received his second dose of Pfizer Covid 19 Vaccine (LOT: EW0161, unsure if ER or EW) on 14Apr2021.  A Product Complaint was filed.  No follow-up attempts are needed. No further information is expected.