Ringing in ears; arm is still sore; right arm is still sore muscle wise; Could not lift right arm as high as she normally could lift right arm/tries to put arm up at shoulder level, gets pain and has to stop; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP) from medical information team. The reporter is the patient.  A 65-year-old female patient received BNT162b2 (BNT162B2), on 30Oct2021 as dose 3 (booster), single (Lot number: FF2593) at the age of 65 years, in right arm for covid-19 immunisation. The patient's relevant medical history included: "Breast cancer" (unspecified if ongoing); "Lymphedema in left arm" (unspecified if ongoing). There were no concomitant medications. Vaccination history included: BNT162b2 (DOSE 1, SINGLE; Lot number: EN6204; Anatomical location: right arm), administration date: 11Mar2021, when the patient was 64-year-old, for Covid-19 immunization, reaction(s): "Sore for a couple of days"; BNT162b2 (DOSE 2, SINGLE; Lot number: EP7533; Anatomical location: right arm), administration date: 01Apr2021, when the patient was 64-year-old, for Covid-19 immunization, reaction(s): "Sore for a couple of days". The following information was reported: MOBILITY DECREASED (non-serious) with onset 30Oct2021, outcome "unknown", described as "Could not lift right arm as high as she normally could lift right arm/tries to put arm up at shoulder level, gets pain and has to stop"; PAIN IN EXTREMITY (non-serious) with onset 30Oct2021, outcome "recovering", described as "arm is still sore"; MYALGIA (non-serious) with onset 30Oct2021, outcome "recovering", described as "right arm is still sore muscle wise"; TINNITUS (non-serious) with onset 31Oct2021, outcome "not recovered", described as "Ringing in ears". Therapeutic measures were taken as a result of pain in extremity, myalgia, mobility decreased.  Additional Information: It was not sure which Pfizer-BioNTech COVID-19 Vaccine was given to patient as far as a color of the cap. Patient confirmed all 3 doses she received were the Pfizer Covid-19 vaccine. No color cap written on vaccination card for any of the 3 doses. She provided vaccine information from vaccination card. Patient got third dose which was her first booster. Patient thought vaccine was given in the afternoon. Patient was indicated the vaccine to fight off Covid virus, she was a cancer patient, and because of age, she was recommended to get the vaccine. It was a time for her to get her second booster but her arm was still (at the time of this report) sore muscle wise form first booster which she got on 30Oct2021. Patient did not want to use her right arm since it was still (at the time of this report) sore, was unable to use her left arm, and was inquiring for alternate locations to administer the vaccine such as hip/butt. She was a 13 years breast cancer survivor coming October, so wanted to get the 2nd booster. Patient had lymphedema in left arm because of the breast cancer. She could not do anything with left arm because of the lymphedema, no shots or blood pressure in left arm. She confirmed all of that occurred prior to getting the vaccine. She could not lift right arm as high as she normally could lift right arm. If patient tried to put arm up at shoulder level, got pain and had to stop. So both of patient's arms were limited. Event started the night of getting booster, had gotten better, still (at the time of this report) not at 100%. Patient also had ringing in ears since getting the first booster dose. Patient woke up the following morning with ringing in ears after getting the 3rd dose, 1st booster. Patient wished the ringing in ears would stop and she was trying to find a doctor to help with the ringing in ears. No vaccine was administered on same date with the Pfizer vaccine considered as suspect. Patient did not visit emergency Room or physician office. Patient was asked to check with primary doctor, take Tylenol, use an ice pad and heating pad to make the soreness more comfortable. Patient did not get any Vaccinations (within 4 weeks) prior to the first administration date of the suspect vaccine. Patient did not want to see another needle. Patient guessed the vaccine booster medication was different from the first 2 doses of the Pfizer Covid-19 vaccine she received, because she was fine with the first 2 doses, was sore for a couple of days with the first 2 doses of the Pfizer Covid-19 vaccine but the soreness went away and the soreness from the 3rd dose, 1st booster, had not gone away. No relevant tests were performed. For first dose: CSN number, MRN number, HAR number reported.