Loss of balance; fell; Dizziness; Hurts; Weaker side on the right, with right hand and right leg; This is a spontaneous report from a contactable consumer (patient's husband). A 26-year-old female patient (young and healthy, Height: 168 cm, Weight: 56.7) received bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE), via an unspecified route of administration, administered in Arm Left on 16Apr2021 (Lot Number: ER8735) as 2ND DOSE, SINGLE for covid-19 immunisation. The patient medical history and concomitant medications were none. The patient previously received the first dose of bnt162b2 for covid-19 immunisation on 26Mar2021 (Lot: ER8727, Expiration date: 31Jul2021, Left arm). The consumer mentioned that she experienced dizziness and a loss of balance after the shot, to which she fell on 19Apr2021 and was brought to the ER. It was suspected that she had a TIA or a mini stroke but the results of computerised tomogram head (CT test for brain) and magnetic resonance imaging (MRI) came back show negative. He mentioned that this happened a month and a half ago and she is doing fine as of calling. Fell and couldn't balance has gotten a lot better. Still as weaker side on the right, with right hand and right leg. States she needs a walker sometimes and at the end of the day when she walks a lot, still has some dizziness sometimes and has to go see family doctor every 2 weeks. Caller states supposed to see rehab doctor today, first appointment available. The consumer states he was told by doctors he needed to call Pfizer to check in and see what's going on with that. They would like to know of this has been reported. States they went later, 8 hours after her first fall. Reports first fall and couldn't balance herself occurred on 19Apr2021 at 03:00 in morning and didn't think it was anything serious until 10:00, he came back home and it was still occurring & still falling. Caller states they sent her to emergency room right away and he thinks she fell again in front of doctor and that's why they had to test her a lot. Caller states they kept her a day inside and wouldn't let him in and did every test and wouldn't let her go until the day after. Caller was not really sure if admitted to a hospital room or stayed in the emergency room during visit, but thinks a hospital room. Went to ER around 15:00 on 19Apr2021 and kept until 20Apr2021. States doctor would love to keep her another day and then he doesn't know what happened, but after 3-4 hours that day, nurse came over and said she could then go home. Confirmed this day was 20Apr2021. Been going to acupuncture doctor every week. Sees family doctor every 2 weeks, Re-hab appointments starting today. States family doctor gave her the following medications: Ferrous Sulf 325 mg one tablet every day; and Naproxen 500 mg twice a day. Caller states dizziness has gotten better, happens at the end of the day, and for right sided weakness, she still has harder time to pick up smaller stuff and doesn't work functionally as well as before and if she puts pressure on it, then it hurts. None history of all previous immunization with the Pfizer vaccine considered as suspect. None additional Vaccines Administered on Same Date of the Pfizer Suspect considered as suspect. None prior Vaccinations (within 4 weeks) prior to the first administration date of the suspect vaccine(s). The events Fall and couldn't balance, Weakness of right side require a visit to Emergency Room and Physician Office. The patient was hospitalized for loss of balance, to which she fell from 19Apr2021 to 20Apr2021. The outcome of hurts was unknown. The patient was recovering from other events.