BP dropped to 70/40; seizures; She did fall into a cabinet; bruised up; inflamed; back was on fire; if she moves her head quickly, she can feel like she will have a headache, hangover; could not walk; Trouble walking; Funny taste in mouth; Pain/ felt achy; tingling sensation from head to her to spine/ hands tingling/ it was also in her abdomen area and in her leg; Back pain; Could hardly move; could not stand up; autoimmune response; delayed allergic reaction; tweaky muscle/ pulled a muscle in her back; pain at the top of her head down to her hip; pain at the top of her head down to her hip; having trouble holding her urine; This is a spontaneous report from a contactable consumer (patient). A 61-year-old female patient received the first dose of BNT162B2 (PFIZER-BIONTECH COVID19 VACCINE, Solution for injection, lot number: EL9266), via an unspecified route of administration in the left arm, on 05Mar2021 1:45 PM at a single dose for COVID-19 immunization. The patient did not receive any vaccines within 4 weeks prior to receiving the BNT162B2. Medical history included allergic reaction, autoimmune disease, brain barrier fever, epilepsy, encephalitis and meningitis. She had epilepsy as a child. She gets epilepsy when she gets sick. The last 4 times she got sick she had a seizure. The last seizure was 1 year ago (in 2020). She may have had COVID, but she got really sick and had a seizure. She is not sure if it was COVID or not. If it was the flu, she does not want that again. She had ataxia and ended up in hospital two times but did not stay. Prior to this, she did not go to hospital for 30 years. She was unable to walk, her gait was real bad. The neurological disorder messed her up for a while. Concomitant medications were not reported. It was reported that the patient received the PFIZER-BIONTECH COVID19 VACCINE first dose and experienced autoimmune response. After the vaccine, she had pain and tingling sensation from head to her to spine (05Mar2021), BP dropped to 70/40 (06Mar2021), seizures (06Mar2021), and delayed allergic reaction (Mar2021). She wanted to know if she should take the second dose or not. She also wanted to know if that would be considered the anaphylactic reaction. It was also reported that the patient experienced funny taste in mouth, back pain, hands tingling on 05Mar2021. The patient further explained that when she got the shot, she had a funny taste in her mouth. It started immediately after she got the vaccine and it lasted 30 minutes. She mentioned this to the people at the facility, but they said she was crazy and no one else has mentioned this. She thought they would be interested, but they did not care. About 20 minutes later she had a tingly sensation. It was in the back of her head that developed into a stingy, painful, heat, funny type feeling. It was all the way down to her back. She later further explained the back of her head was tingling (05Mar2021). Like were the cerebellum is to spine. This sensation is still there, but better. After she felt this feeling her back then started hurting. She bent over and her back went out. She felt achy. She already had what she called a tweaky muscle (05Mar2021). She had pulled a muscle in her back, but it was nothing that had caused a problem. After getting the COVID vaccine it triggered an immune response in her body. She started to have pain at the top of her head down to her hip (05Mar2021). She bent over and she could not stand up (05Mar2021). Her husband had to help her put her pants on and sit down due to this. She started to have horrible back pain (05Mar2021). She could hardly move (05Mar2021). She was having trouble walking (05Mar2021). She was having trouble holding her urine (05Mar2021). On Saturday evening (06Mar2021), her blood pressure started dropping and she later had a seizure. After the seizure occurred it seems like everything got better and she did not have any trouble since. It was very scary. She mentioned she was in the bathroom and there was a tub full of water. She had a hard time already getting to the bathroom. She was in a lot of pain. The amount of pain she had she thinks affected her blood pressure. She had pain in the back, middle of her back. It started at her head, back of head, down her spine, came down to her back and hips. She was hurting a lot and having a terribly hard time getting around. She could hardly walk. She was going to the bathroom because she felt like she had to go. Her husband was helping her sit on the toilet. When she stood up it was like her blood pressure dropped, she almost went headfirst in the tub full of water, but her husband caught her, laid her down, and had a seizure. This was a very unnerving feeling. The seizure did not last more than a minute, maybe two at the very most. The seizure occurred probably around 6PM or 7PM. It did not last long at all. She woke up on the floor. She had been sitting and she thought she had fallen off the toilet. However, her husband had to remind her that a few things happened in between. She almost fell in the bathtub and she has glass doors. She mentioned she felt as clarified and confirmed sped up. She did fall into a cabinet and is bruised up from that seizure (06Mar2021). She is sore from the pain from that. Still inflamed (06Mar2021) possibly due to the seizure. Like she has ruminants of what occurred to back of head, cerebellum. Before she had the seizure, her blood pressure had started dropping. It started dropping in the evening around 5PM or 5:30PM. Mentioned she is a little confused about the time onset because she was hurting so much and bad all day. She does not take any pain medication. She has an autoimmune disease and it is difficult for her to take medications. On top of that, if she wanted to take an Aspirin she was told she should not take one. She was informed she was trying to promote an auto-immune response to the vaccine. As the day ran on, she was in a lot of pain. She had been in pain since Friday and was trying to deal with that. The patient further stated her blood pressure is back, no illness. After the seizure her blood pressure went back to normal and at this time it is perfectly fine. The back pain she experienced went from the brain down to her backbone. The pain is gone. It started to go away after the seizure and by Sunday 07Mar2021 it was totally gone. At first it was like she could not walk (05Mar2021). It was like she/her back was on fire (05Mar2021). The patient also mentioned if she moves her head quickly, she can feel like she will have a headache, hangover. She feels it in her back. She feels like she is near recovery, and this is a feeling she does not thing will stay. She further went on to say her hip where she fell is a different story. However, this is associated to a fall and not a vaccine. She was having this problem when she had the vaccine, but the vaccine caused it to be more and extra aggravating.  She later added, when she first got home along with head tingling her hands were tingling as well. When her brain and hands were going through this tingling sensation, she started to notice the back trouble and it was also in her abdomen area and in her legs causing trouble walking (05Mar2021). The events did not require a visit to the emergency room or physician office. Outcome of the events trouble walking, could not walk, tingling sensation and hangover was recovering. Outcome of BP dropped to 70/40 was recovered on Mar2021. Outcome of seizures recovered on 06Mar2021. Outcome of funny taste in mouth was recovered on 05Mar2021. Outcome of back pain was recovered on 07Mar2021. Outcome of bruised up was not recovered. Outcome of the remaining events was unknown. The patient provided an unrelated causality between the vaccine and event fall.   No follow-up attempts are needed. No further information is expected.; Sender's Comments: Based on the current available information, the event Fall is most likely related to an intercurrent or underlying condition which is not related to the suspected drug.