with every dose of the vaccine caller has had muscle problems; Shrunk form back surgery; Shrunk form back surgery; 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 omi xbb.1.5 (COMIRNATY (2023-2024 FORMULA)), on 28Sep2023 as dose 1, single (Lot number: HG4633) at the age of 77 years, in left arm for covid-19 immunisation. The patient's relevant medical history included: "Lupus" (ongoing), notes: was in caller's 30s when started, doctor tried to figure out what caller had, whether was rheumatoid arthritis or Lupus; "Rheumatoid arthritis" (ongoing), notes: caller was in her late 30s. Doctor didn't know what was going on, so caller had to try to get family history and caller's aunt had rheumatoid arthritis; "Hashimoto's" (ongoing); "Polymyalgia rheumatica" (ongoing), notes: Polymyalgia rheumatica From: Started after Pfizer COVID-19 vaccine, vaccine triggered it.; "Fibromyalgia" (ongoing); "Sjogren's" (ongoing). There were no concomitant medications. Vaccination history included: bnt162b2 (DOSE 1, SINGLE, Lot number: EN6205, Anatomical location: Upper left arm, Time: sometime in morning), administration date: 02Mar2021, when the patient was 75-year-old, for Covid-19 immunization, reaction(s): "polymyalgia rheumatica", "with every dose of the vaccine caller has had muscle problems", "leg cramps", "very tired", "arm irritation", "tenderness"; bnt162b2 (DOSE 2, SINGLE, Lot number: ER8727, Anatomical location: Upper left arm, Time: sometime in morning), administration date: 23Mar2021, when the patient was 75-year-old, for Covid-19 immunization, reaction(s): "polymyalgia rheumatica", "In 2022 had an emergency visit to hospital, had pericarditis, was in late Mar2022, in between vaccines", "chest pain under rib on left side", "Couldn't breathe", "leg cramps", "very tired", "arm sensitive", "headache", "sore throat", "with every dose of the vaccine caller has had muscle problems"; bnt162b2 (DOSE 3 (BOOSTER), SINGLE, Lot number: 30135BA, Anatomical location: Upper left arm, Time: sometime in morning), administration date: 21Oct2021, when the patient was 75-year-old, for Covid-19 immunization, reaction(s): "with every dose of the vaccine caller has had muscle problems"; bnt162b2;bnt162b2 omi ba.4-5 (DOSE 4 (BOOSTER), SINGLE, Lot number: GH9694, Anatomical location: Upper left arm, Time: sometime in morning), administration date: 21Sep2022, when the patient was 76-year-old, for Covid-19 immunization, reaction(s): "with every dose of the vaccine caller has had muscle problems"; bnt162b2;bnt162b2 omi ba.4-5 (DOSE 5 (BOOSTER), SINGLE, Lot number: GJ6742, Anatomical location: Upper left arm, Time: sometime in morning), administration date: 28Apr2023, when the patient was 77-year-old, for Covid-19 immunization, reaction(s): "with every dose of the vaccine caller has had muscle problems". The following information was reported: SPINAL OPERATION (medically significant), BODY HEIGHT DECREASED (non-serious) all with onset 2023, outcome "unknown" and all described as "Shrunk form back surgery"; MUSCLE DISORDER (non-serious), outcome "unknown", described as "with every dose of the vaccine caller has had muscle problems". The events "shrunk form back surgery" and "with every dose of the vaccine caller has had muscle problems" required physician office visit. The patient underwent the following laboratory tests and procedures: Body height: Decreased. Therapeutic measures were taken as a result of spinal operation.  The information on the batch/lot number for bnt162b2 omi xbb.1.5  has been requested and will be submitted if and when received.; Sender's Comments: Linked Report(s) : US-PFIZER INC-202300340514 same patient/vaccine, different doses/event.;US-PFIZER INC-202300340515 same patient/vaccine, different doses/event.;US-PFIZER INC-202300340516 same patient/vaccine, different doses/event.;US-PFIZER INC-202300340517 same patient/vaccine, different doses/event.;US-PFIZER INC-202300340518 same patient/vaccine, different doses/event.;