sudden dizzy swoons sitting and standing; long COVID; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 66-year-old female patient received BNT162b2, BNT162b2 omi ba.4-5 (BNT162B2, BNT162B2 OMI BA.4-5), on 21Dec2022 as dose 5 (booster), single (Lot number: GL0446) at the age of 66 years for covid-19 immunisation. The patient's relevant medical history included: "Low blood level" (unspecified if ongoing); "episode of brain confusion", start date: Apr2020 (ongoing); "fall head first into the boat", start date: Apr2020 (ongoing); "fatigue and weariness", start date: Apr2020 (ongoing); "brain fog", start date: Apr2020 (ongoing); "lack of balance", start date: Apr2020 (ongoing); "clumsy", start date: Apr2020 (ongoing); "random pain surges in muscles, whole body and heart area", start date: Apr2020 (ongoing); "random pain surges in muscles, whole body and heart area", start date: Apr2020 (ongoing); "random pain surges in muscles, whole body and heart area", start date: Apr2020 (ongoing); "apathy", start date: Apr2020 (ongoing); "inability to think", start date: Apr2020 (ongoing), notes: now it just slows me down Apr2023. Concomitant medication(s) included: VITAMIN D [COLECALCIFEROL] taken for anaemia, start date: 22Jan2021. Vaccination history included: BNT162b2 (DOSE 1, SINGLE, Route of administration: Intramuscular, Batch/lot number: EN5318), administration date: 26Apr2021, for COVID-19 immunisation; BNT162b2 (DOSE 2, SINGLE, Route of administration: Intramuscular, Batch/lot number: ER8735), administration date: 17May2021, for COVID-19 immunisation; BNT162b2 (DOSE 3 (BOOSTER), SINGLE , Route of administration: Intramuscular, Batch/lot number: FJ8762), administration date: 13Dec2021, for COVID-19 immunisation; BNT162b2 (DOSE 4 (BOOSTER), SINGLE , Route of administration: Intramuscular, Batch/lot number: FJ4991), administration date: 05Jul2022, for COVID-19 immunisation, reaction(s): "lymph node swelling", "ME and Chronic Fatigue syndrome", "ME and Chronic Fatigue syndrome". The following information was reported: POST-ACUTE COVID-19 SYNDROME (non-serious) with onset 2023, outcome "unknown", described as "long COVID"; DIZZINESS POSTURAL (medically significant) with onset 2023, outcome "not recovered", described as "sudden dizzy swoons sitting and standing". The events "sudden dizzy swoons sitting and standing" and "long covid" required physician office visit. Therapeutic measures were not taken as a result of dizziness postural. Clinical course: Patient finally found the dates of the onset of her symptoms before they were known as COVID. Apr2020 began all the symptoms on previous pages plus a significant loss of balance and pitching forward into her boats interior landing on her arms protecting her head with her legs up the stairway; also needing to pay strict attention to walk carefully in the middle of the dock when leaving boat home for any reason to ensure, patient did not fall into the water due to confused and distracted thinking/cognition. The extreme apathy and confusion at the onset and through all vaccines and boosters has only lessened, but not disappeared completely; and for nearly two years now has remained in this "unfinished" state/unrecovered state. And it was not her age. Patient had none of this brain fog, confusion, disorientation, apathy, lack of energy requiring 7 hours of extra sleep after only 15 minutes walking, sitting 45 minutes, and walking 15 minutes back home.; Sender's Comments: Linked Report(s) : US-PFIZER INC-202200896228 same patient/product, different dose/event;