loosing hair; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP) from medical information team. The reporter is the patient.  A 77-year-old female patient received BNT162b2 (BNT162B2), on 11May2022 as dose 4 (booster), single (Lot number: FP4554) at the age of 77 years, in arm for covid-19 immunisation. The patient's relevant medical history included: "Polymyalgia rheumatica (PMR)", start date: 2017 (not ongoing), notes: Stop Date: she does not have this condition anymore. The patient took concomitant medications. Vaccination history included: BNT162b2 (Dose 1, Lot Number/Expiry Date: EL1283/Unknown. Route, Anatomical Location: Injection, unknown arm .This was dose 1 of 4.), administration date: 26Jan2021, when the patient was 76-year-old, for Covid-19 immunization; BNT162b2 (Dose 2, Lot Number / Expiry Date:  EL1283 / Unknown, Route, Anatomical Location: Injection, unknown arm  This was dose 2 of 4.), administration date: 16Feb2021, when the patient was 76-year-old, for Covid-19 immunization; BNT162b2 (Dose 3, Lot Number Expiry Date: 301358A / Unknown, Route, Anatomical Location: Injection, unknown arm : This was dose 3 of 4.), administration date: 06Oct2021, when the patient was 77-year-old, for Covid-19 immunization. The following information was reported: ALOPECIA (non-serious), outcome "not recovered", described as "loosing hair". The event "loosing hair" required physician office visit. Relevant laboratory tests and procedures are available in the appropriate section.  Additional information: She was concerned about it because she was losing quite a bit of hair, a bunch. She has gone to a dermatologist and also talked to another doctor and both think there is a strong possibility that it might be the vaccine since they have been unable to come up for any other cause for the hair loss. She asked if there was any connection with hair loss and Covid Vaccine. Hair loss: Onset date unknown, she does not know if it came with the third dose of Covid Vaccine which was on 06Oct2021, or right after the fourth dose of Covid Vaccine which was on 11May2022. From what she has read onset of hair loss can occur 3-4 months out. For the last few days event has been staying the same; but tomorrow, who knows. Caller verified there were no relevant concomitant products or other medical conditions to provide for this report. She only takes a statin which she has taken for 40 years. Otherwise there has been no change, no family tragedies. She has racked her brain on the computer trying to figure out a connection but nothing was showing up. The only relevant testing done was bloodwork that has not been resulted yet. There has been no other testing, treatment or medical interventions to report. Additional Vaccines Administered on Same Date of the Pfizer Suspect-If applicable, list all vaccines administered on same date with the Pfizer vaccine considered as suspect was none. Did any AE(s) require a visit to: Emergency Room? Yes No; Physician Office? Yes No; Prior Vaccinations (within 4 weeks) If applicable, list any other vaccinations within four weeks prior to the first administration date of the suspect vaccine(s) was none. AE(s) following prior vaccinations was none. Family Medical History Relevant to AE(s) was none. Relevant tests was none other than the bloodwork already reported that has not been resulted yet.