Soreness of left arm after each injection; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 72-year-old male patient received BNT162b2 (BNT162B2), on 14Apr2022 as dose 4 (booster), single (Lot number: FJ4989) at the age of 72 years, in left arm for covid-19 immunisation. The patient had no relevant medical history. There were no concomitant medications. Vaccination history included: BNT162b2 (3rd dose 20Oct2021, Lot 301558A, expiration unknown, injected in left arm.), administration date: 20Oct2021, when the patient was 72-year-old, for COVID-19 immunization, reaction(s): "Soreness in left arm after each vaccine"; BNT162b2 (2nd dose 27Mar2021, Lot EP6955, expiration unknown, injected in left arm.), administration date: 27Mar2021, when the patient was 71-year-old, for COVID-19 immunization, reaction(s): "Soreness in left arm after each vaccine"; BNT162b2 (1st dose 06Mar2021, Lot EN6199, expiration unknown, injected in left arm.), administration date: 06Mar2021, when the patient was 71-year-old, for COVID-19 immunization, reaction(s): "Soreness in left arm after each vaccine". The following information was reported: PAIN IN EXTREMITY (non-serious) with onset 14Apr2022, outcome "recovering", described as "Soreness of left arm after each injection". The event "soreness of left arm after each injection" required physician office visit. Therapeutic measures were not taken as a result of pain in extremity.  Additional information: Reporter on the line regarding his 72 year old wife. Did mention both had series of Pfizer COVID vaccine injections 5 injections total. Both of them, after 3rd dose, they had soreness of arm that went away after 3-4 days. He said they both had arm soreness after each injection, not just the 3rd dose. He did not have any other issues other than arm soreness. Soreness in left arm after each vaccine. Sore arm for about 3 days. Started the same day but was more noticeable the next day. All improved and had no issues and no medical treatment required. He did not have any spot or indentation. All of his dates and vaccine lots are all the same. Each time they had injection they had soreness of arm. All of his injections were on same arm, left arm. All soreness started the evening of the injection, and really noticed it the next day. Eventually in a couple or 3 days, the soreness was gone. They did not want Moderna, so all of them were Pfizer. He does not take any medications. Both of them received their vaccines on the same dates, times, locations, with the exact same lot numbers for all. Both have the same primary care provider. 5th dose 08Dec2022, Lot GJ3275 updated booster, expiration unknown, injected in right arm. Time: 1st two were at 11:00, before noon, 3rd was done around 13:00, 4th one that had issue with unknown time and 5th one was done at 17:00. Vaccine was not administered at Military Facility. No prior vaccinations (within 4 weeks). No Family Medical History Relevant to Adverse Events (AEs). Adverse Events: No medical treatment required. He wanted to find out what Pfizer had to say first and then may make an appointment to see the doctor.