nerves are getting progressively getting worse; Can't walk without a walker and needs a cane too/can't walk without assistance; Carpal Tunnel Syndrome; his feet and hands went numb/now up to his knees and elbows/feet and hands went numb was reported as worsened; his feet and hands went numb/now up to his knees and elbows/feet and hands went numb was reported as worsened; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP) from medical information team. The reporter is the patient.  A 74-year-old male patient received BNT162b2 (BNT162B2), in 2020 as dose 3 (booster), single (Batch/Lot number: unknown), in left arm for covid-19 immunisation. The patient's relevant medical history included: "Diabetes" (ongoing), notes: Borderline Type 2, A1C down below 5, Ruled it Out as to the Cause of his Numbness; "High Blood Pressure" (ongoing), notes: Takes a medication for this but it is under control. The patient's concomitant medications were not reported. Vaccination history included: Bnt162b2 (DOSE 1, SINGLE; Lot number: unknown, Anatomical Site of injection: Left Arm), for Covid-19 immunization, reaction(s): "nerves are getting progressively getting worse"; Bnt162b2 (DOSE 2, SINGLE; Lot number: unknown, Anatomical Site of injection: Left Arm), for Covid-19 immunization. The following information was reported: HYPOAESTHESIA (non-serious) with onset Feb2020, outcome "not recovered", CONDITION AGGRAVATED (non-serious), outcome "unknown" and all described as "his feet and hands went numb/now up to his knees and elbows/feet and hands went numb was reported as worsened"; NEUROPATHY PERIPHERAL (medically significant), outcome "unknown", described as "nerves are getting progressively getting worse"; GAIT DISTURBANCE (medically significant), outcome "unknown", described as "Can't walk without a walker and needs a cane too/can't walk without assistance"; CARPAL TUNNEL SYNDROME (non-serious), outcome "unknown". The patient underwent the following laboratory tests and procedures: Antibody test: Norm Low, notes: Norm Low; Blood test: normal; Magnetic resonance imaging: normal; Platelet factor 4: Norm High, notes: Norm High.  Clinical course: Agent stated she had a caller on the line calling about the Pfizer Covid 19 Vaccine, unknown if Monovalent or Bivalent, who reported that after vaccination his feet and hands went numb, and after 2 more boosters, now he can't walk without assistance. Confirmed reporter details and above information with the caller. Caller stated it was in 2020 when they first allowed the public to get it. Caller stated he was so excited to get it, and he was still glad he got it. He stated he was hoping as an overall deal that Pfizer can help him, he was not mad at Pfizer. He stated he actually got Covid and it was mild. He stated he had High Blood Pressure and Diabetes, and he thinks if he didn't have the vaccine, he might have died. He stated he had talked to several other people his age that have had this same thing happen so he hoped Pfizer had or could come up with a miracle antidote to cure him so he can go play golf again. Calling to see if other people had this happen to them. Feet and Hands Went Numb caller stated now it was up to his knees and elbows. He got one of those EMGs where they check the nerves by punching with needles a couple of weeks ago and he had one 9 months ago. The doctor told him his nerves were getting progressively getting worse, but it wasn't a shock, he knew it. He stated after 2 more boosters it started getting really bad, the longer time went, the worse it got, and it gets worse every day. He was definitely better 3 months ago. He can't walk without a walker and needed a cane too. He stated that 9 months ago he could stand up by himself, but now he needs a cane to stand up. He got Covid after 1 vaccine and 2 boosters. He didn't know he had it. He went to his 55-year class reunion in 2021 that summer and 12 of them got Covid at the reunion. His buddy called him and said his wife and him both had Covid and he asked him if he had it. Caller said he had a runny nose, and he didn't think so, but he took a test, and it came back positive. He had a runny nose for a day was all. Stated thank goodness for Pfizer, it was a nonevent for him. His friend's wife died 30 days after the reunion, but she was 78 and had underlying health issues. Suspect Product was Pfizer Covid 19 Vaccine but unknown if Monovalent or Bivalent. Caller stated he got them he thinks in 2020, it was as soon as they became available to the public. Dates, NDC, Lot, Expiration: Unknown at this time. Caller stated his card was upstairs in his safe and it would take him a really long time to make it up the stairs to get it.  He stated he had 1 vaccine and 2 Boosters. Caller stated his neurologists said he can't have any more Covid vaccines. He said that the Neurologist thought it was carpal tunnel possibly, so they did a procedure, but it didn't help at all. They also did 22 blood tests and a spinal tap, and he spent 22 hours in an MRI machine that they had to knock him out for, and everything comes back normal. He joked; he has been called a lot of things in his life but normal has never been one. Caller states he was very active prior to this, he played golf for the last 65 years and pickle ball for the last 3 years. States he has got an appointment with Clinic 16May2023. Caller asked if anybody that call handler knew of that were in their 70s that had these symptoms that Pfizer or anyone has been able to help. Call handler stated she doesn't have the resources to speak from in this department, that would be Medical Information that he had already spoken to. He stated he understands, he was just trying to fill his hope meter. Patient was querying how can he reverse this process and walk again. When agent tried to confirm presentation (monovalent vs bivalent), caller stated that all he knows was that he received the Pfizer COVID-19 Vaccine in 2020, but does not know which one. Agent informed patient that beyond what is described in the Prescribing Information for Comirnaty, Pfizer does not provide any recommendations regarding the management or treatment of potential adverse events/reactions/symptoms that a patient /consumer may experience. Your doctor/healthcare provider is in the best position to advise you about the appropriate action to take as your doctor/healthcare provider is most familiar with your medical condition, clinical history, how your treatment has been conducted and any relevant information to your specific case.  The information on the batch/lot number for BNT162b2, BNT162b2 omi ba.4-5 has been requested and will be submitted if and when received.; Sender's Comments: Linked Report(s) : US-PFIZER INC-202300121944 Same reporter/patient, different dose/AE.;US-PFIZER INC-202300122061 same patient/product, different dose/event;