chills; pain up his back; hands feel fuzzy; feet started hurting; difficulty walking; crawl; pain; can't stand; his legs feel frozen; This is a spontaneous report from a contactable consumer (patient). This 69-year-old male patient received the 1st dose of bnt162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE) via an unspecified route of administration in the arm left on 11Aug2021 at age of 69 years old as single dose for COVID-19 immunization. Medical history was unknown. Concomitant medications included sitagliptin phosphate (JANUVIA) for blood sugar, rosuvastatin calcium for cholesterol, valsartan for blood pressure; all ongoing. The patient would normally get the Flu Vaccine. He had had a lot of vaccines. The patient received first dose of the Pfizer BioNTech Covid 19 vaccine yesterday afternoon on 11Aug2021. About 8 hours afterward his feet started hurting on 11Aug2021, had difficulty walking on Aug2021 and had to crawl on Aug2021, chills on 12Aug2021, pain up his back on 12Aug2021 and his hands feel fuzzy on Aug2021. By 2am this morning the pain on Aug2021 was horrible, and he described it as an 8 out of 10.  He cannot put weight on his left foot and his wife is looking for crutches for him.  He says his feet, ankles and calves feel like they're in cement boots.  He can't stand, his legs feel frozen on Aug2021 but he can wiggle his toes. He was calling to see if these were side effects of the vaccine and how long they will last. Patient had the first dose yesterday afternoon. He initially stated by midnight he was not feeling terrific. He has been having trouble with his feet hurting. By 2 AM he could not walk. It was like feet were in cement in boots. He could wiggle his toes, but his feet and calves felt like he was walking on rocks or through thorns. He also had chills, he could not get warm. He had pain up his back. His hands felt fuzzy, and still feel fuzzy. The patient had just come back home from an hour in the pool and coming up the stairs. He started the treadmill, but he could not do it all the way because he started to hurt. Trouble with his feet hurting: He stated with his left foot he cannot put any weight on it at all. He had to crawl, he cannot stand. He had the shot yesterday afternoon and it started bothering him before midnight. Clarified it started 11Aug2021. By 2AM the pain was like 8/10.The pain was still there, but now like 6/10 or something. He mentioned he was doing fine until like eight hours later after the shot, but then he started to ache. He further clarified the pain in his right foot was a little better, but the left foot was not better. He had to call his wife on the cell phone while inside the house because he could not get up and get the telephone. That's how bad it is. Chills started sometime between 2AM and 6 AM. Pain up back initially started around 2 AM, later stated it was at least 6am-7am. He further clarified the start time to be sometime between 2 AM-6 AM. It comes and goes. 'Hands feels fuzzy' started midnight. He mentioned he was a pianist. When something went on with his hands he can feel it and its pretty apparent. He stated he would have to crawl across the house and get the vaccination card. He further clarified his wife told him it was about noon when he got the vaccine. Now, he was trying to think and put two and two together. He thought it was about two, but was not thinking clearly now. AEs did not require a visit to Emergency Room or Physician Office. Between 2AM-6AM he was considering going to the Emergency Room. The phone was not working. He was lying on the floor, but did not want to wake everyone up. He did not want call for an ambulance to come over, so he just waited to see what happens. He then was sleeping in, well trying to sleep in this morning and found out his cell phone did not work. He could not call anyone. Once his wife got done with the grandkids she provided him with her phone that he was on now. He added, he had to follow-up with the doctor to see if doctor wanted him to come in or to determine if he should give events another day or so to see if get better. Stated that was where he was now. He was due for the second shot , 01Sep2021. He was scared to get the second shot and wondered if he should get the second shot. Outcome of the events feet started hurting, difficulty walking, crawl, pain up his back, pain, can't stand, his legs feel frozen was unknown, of the event hands feel fuzzy was not recovered, of the event chills was recovering,   The lot number for the vaccine, [BNT162B2], was not provided and will be requested during follow up.