she thought she had a blood clot; maybe it is MS (multiple sclerosis); possible septal infarct; weakness in her left arm; losing her balance; vaccine was given up high on her arm, not 2 fingers down. She thought they had hit bone; less range of movement in her left foot; trouble walking; like someone who had a stroke; numbness; legs felt heavy climbing stairs; immediate pain when needle went all the way in and worse when vaccine went in; pain in shoulder joint; This is a spontaneous report from a contactable consumer (patient). A 49-year-old female patient received BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, Batch/Lot Number: Ep6955), dose 1 via an unspecified route of administration, administered in Arm Left on 25Mar2021 18:00 (at the age of 49years) as single dose for Covid-19 immunization. The patient is not pregnant at the time of vaccination. Medical history included anemia that is treated, living kidney donor, gastric bypass in 1999, gallbladder removal, hysterectomy, intussusception x2, migraines, high heart rate, and smoking. Concomitant medications included omeprazole (OMEPRAZOLE), amfetamine aspartate, amfetamine sulfate, dexamfetamine saccharate, dexamfetamine sulfate (ADDERALL), and albuterol [salbutamol] (ALBUTEROL [SALBUTAMOL]); all taken for an unspecified indication, start and stop date were not reported. The patient previously received Flu vaccine and Tetanus vaccine. The patient did not receive any other vaccines within 4 weeks prior to the COVID vaccine. The patient has not been tested for COVID-19 since the vaccination. She got the shot on 25Mar2021 on Thursday evening at 1800. She is 49 years old and has had all the flu shots and tetanus shots. She has never had one hurt so bad. She stated that the vaccine was given up high on her arm, not 2 fingers down. She thought they had hit bone. It was reported that the patient experienced immediate pain when needle went all the way in and worse when vaccine went in. The whole time it hurt really bad and her arm hurt severely for 2 days from 25Mar2021. She still has pain in shoulder joint. That aside wasn't a big deal, it went away even though the joint is sore. The following Monday 29Mar2021 in the evening, her legs felt heavy and she had trouble going up the stairs. Then she had complete numbness of her left leg, from her hip or butt crack to the tip of her toes. It was on the same side she had the shot. It was further reported that the patient's legs felt heavy climbing stairs then she woke Thursday morning with her left leg numb. She couldn't feel herself starting to have a bowel movement because the numbness went all the way up to that area. She went to the ER (emergency room) on Saturday night (03Apr2021) because she was afraid of a blood clot. An ultrasound was done on her left leg, CT of head and neck, and blood work with nothing found. She has numbness and less range of movement in her left foot with trouble walking and have had no improvement with calf being numb. It was further clarified that when she was Easter shopping, there was numbness in her foot was causing her to drag her foot around the store. It was like someone who had a stroke, with slight impairment on one side. Her foot slaps the floor. She doesn't have control of it, she can't flex her foot up and down at all and she has little movement in her toes, even now. When she went to the emergency room, she thought she had a blood clot. She is a kidney donor and is healthy over all except for anemia that gives her tingly toes since she was 30, off and on. She never had a body part felt so numb, other than when she sits on her leg wrong. They did a bunch of tests there. They did a doppler, CT scan, and an EKG (unspecified date) which was abnormal. Her EKG has never been abnormal before. It said possible septal infarct undetermined time. The doppler showed no deep or superficial blockages noted from her groin down to her toes/ankle. The doppler was to check for blood clots. They referred her to her primary care provider who said that she will do a neurological exam. She has weakness in her left arm as well. The weakness in her left arm was only told by the neuro touch test. The patient further clarified that she doesn't have less range of motion, it is really just pain (arm). She can still move her arm all the way. Her left side is weaker or less sensitive as far as the neuro test. She wasn't aware she had less feeling on her arm until the nurse said she did. Her arm pain is nothing significant, it can hurt when moving her arm. She had no leg pain or anything like that until later in the week. She still had symptoms of losing her balance. Getting in and out of the chair she almost fell down. She didn't realize the numbness. Monday, she felt heaviness going up the stairs. For 2 days she had the worst pain ever in her arm. She had the tetanus shot and didn't have anything like that. It went away, when she raises her arm off from the side, she still has pain in the joint. She has migraines, it is nothing that is causing difficulty. She is more concerned something else happened. Patient thought maybe it is MS (multiple sclerosis) and asked if it is peripheral artery disease. She did smoke half a pack every other day. She is 49 but didn't start smoking till she was 36. It is a terrible habit and her doctor is aware. She also had her good and bad cholesterol which was just over 100. She is just reporting it because it happened on only the left side and she is a healthy person. She never had high blood pressure and never been treated for it, but she has had high heart rate before. It is not something that has ever caused any issue. She doesn't have something like peripheral artery disease, when she (software company name withheld) that is said plaque in the arteries. The doppler showed no signs of blockage superficial or deep on that side. She doesn't have an appointment until 29Apr2021. She doesn't know what to do to get more urgent care. The pain in her arm was better after the first 2 days. It is like a tooth ache, a dull ache. It is not all the time, just when moving her arm. Her legs were worse to where Thursday, she woke, and she was numb from the top of her leg to the tip of her toe. She can still lift her leg, but when she walks the tip of her second toe which is longer will drag on the ground. When she walks it is hard to hold her shoe on the left foot or put her shoe on. She can't maneuver her foot. When her foot hits the ground, the ball area of her foot smacks the floor because she doesn't have control over it. It is laboring to walk and is hard. She was kind of limping and pulling that leg on the left side. Her laboratory tests were BMP, CBC auto diff, CBC with diff, CT, angiogram of the head and neck, EKG 12 lead, and they did a venous doppler of the left lower extremity. It all came back good except the EKG which says septal infarct undetermined date, which has never come up on any tests before. The events resulted in Emergency room/department or urgent care, Disability or permanent damage. There was no treatment received for the adverse event. The patient has not been tested for COVID-19 since the vaccination. The outcome of events was not recovered.