arm started to hurt and it won't go away/Got it in her left arm and her left arm is hurting; Bruise; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP), Program ID. The reporter is the patient.  A 62-year-old female patient received BNT162b2, BNT162b2 omi ba.4-5 (BNT162B2, BNT162B2 OMI BA.4-5), in Sep2022 as dose number unknown (booster), single (Batch/Lot number: unknown) at the age of 62 years, in left arm for covid-19 immunisation. The patient's relevant medical history included: "blood pressure" (unspecified if ongoing); "cholesterol lower" (unspecified if ongoing); "won't retain fluids" (unspecified if ongoing). Concomitant medication(s) included: PRAVASTATIN taken for blood cholesterol decreased; METOPROLOL taken for blood pressure measurement; HYDROCHLOROTHIAZIDE taken for fluid retention. Vaccination history included: Covid-19 vaccine (Primary Immunization series complete;  unknown manufacturer), for COVID-19 immunization. The following information was reported: CONTUSION (non-serious) with onset Sep2022, outcome "recovered", described as "Bruise"; PAIN IN EXTREMITY (non-serious) with onset Sep2022, outcome "not recovered", described as "arm started to hurt and it won't go away/Got it in her left arm and her left arm is hurting". Therapeutic measures were taken as a result of pain in extremity.  Additional information: Reaction- arm started to hurt and it won't go away, Bruise, felt medicine going in. Outcome: Unknown. Suspect dosage dose unknown - given in her left arm, Indication- so she won't catch COVID. System Reference: no transfer required, report related to a study or programme: CEP/CSP 159558 Support Call Center. The patient also the reporter, Other Conditions: No, Investigations: No. Pfizer COVID-19 vaccine, booster dose a Pfizer product, Reason for no lot number: of Pfizer COVID-19 vaccine, booster dose: Complainant does not have the product with them at the time of call, Expiry Date of Pfizer COVID-19 vaccine, booster dose: Unknown. Warm transfer from  Support Call Center, CEP/CSP 159558. Agent relays he has a caller that mentioned she is trying to report what happened when she took the last booster dose of Pfizer COVID-19 vaccine. States her arm started to hurt and it won't go away. Caller states she is not going to say it's really that. After that she has problems with it and it hasn't gone away. Uses Biofreeze spray each night. She sprays it and it helps for a little while but it comes back every day. She doesn't know, it's been ever since she took it. She thought it would go away. Told her primary physician about it and he just said oh gosh and brushed it off, so she told another doctor and she said she had some problems and hers went away. Does not want to report for her. She had some pain in her arm too and hers went away. Unknown vaccine name. Not sure that is what it is but since she took it it's giving her problems. States she got it in Sep2022. She felt the medicine and all when she did it it hurt as she was doing it. Shortly, maybe a day or so, after that is when hurting began. Left arm. Thought it was something that would go away. You know how some shots take a while and then it goes away. This one never did go away; the pain is still there. Uses Biofreeze for comfort. Not saying that is what it is, it just happened after. When queried outcome caller states the pain is actually the same from when she first took it, about the same. Then states it got a little worse since. At night it hurts her a little worse than the day. Got it in her left arm and her left arm is hurting. Has been taking conmed for years. Doesn't have details of previous COVID-19 vaccines. States all of them were Pfizer COVID-19 vaccines taken in order in which you should take this, and she is up to date. States the 1st one she was still working in the medical field, and she took that at hospital. It was when it very first came out. Prior Vaccinations (within 4 weeks): usually takes the flu shot then at the hospital. Not sure did she take. Doesn't think she did. For the COVID vaccine thinks it was in Apr doesn't know, they took it same day it came out. Thinks the flu shot would be in Sep. No Family Medical History Relevant to Adverse Events (AEs), Event- her arm started to hurt and it won't go away, AE required visit to: check all that apply: Physician Office; went to primary. Wishes it would go away. That was most painful one, all the others she didn't feel anything or not had problems. Felt medicine going in and has been hurting since. It left a bruise. Said to herself this one must be stronger or something. Bruise was when she looked the next day it was there. Stays for a minute and went away. Most painful that she got. With the others she didn't feel anything.  The information on the batch/lot number for BNT162b2, BNT162b2 omi ba.4-5 has been requested and will be submitted if and when received.