I have discomfort; Difficult to sleep on affected arm; Difficult to sleep on affected arm; Pain; limited mobility; the dose was administered to his tendon and not to his muscle; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP) from medical information team for a Pfizer sponsored program. The reporter is the patient.  A 78 year-old male patient received bnt162b2 (BNT162B2), administered in arm right, administration date 18Oct2021 13:00 (Lot number: FH8020) at the age of 78 years as dose 3 (booster), single for covid-19 immunisation. Relevant medical history included: "Barrett's esophagus" (unspecified if ongoing); "Cardio respiratory issues Senior citizen" (unspecified if ongoing); "Cardio respiratory issues Senior citizen" (unspecified if ongoing). The patient's concomitant medications were not reported. Vaccination history included: Bnt162b2 (Dose number: 1, Date/Time: 20Mar2021, Time : 10:00 AM, Anatomical site of injection : Right Arm, Route of administration : Intramuscular, Batch/Lot number : ER8727), administration date: 20Mar2021, when the patient was 77 years old, for COVID-19 immunization; Bnt162b2 (Dose number: 2, Date/Time: 10Apr2021, Time : 10 AM, Anatomical site of injection : Right Arm , Route of administration : Intramuscular, Batch/Lot number : ER0151), administration date: 10Apr2021, when the patient was 77 years old, for COVID-19 immunization. The following information was reported: PRODUCT ADMINISTERED AT INAPPROPRIATE SITE (non-serious) with onset 18Oct2021, outcome "unknown", described as "the dose was administered to his tendon and not to his muscle"; DISCOMFORT (non-serious), outcome "unknown", described as "I have discomfort"; LIMB DISCOMFORT (non-serious), INSOMNIA (non-serious), outcome "unknown" and all described as "Difficult to sleep on affected arm"; PAIN IN EXTREMITY (non-serious), outcome "unknown", described as "Pain"; MOBILITY DECREASED (non-serious), outcome "unknown", described as "limited mobility".  Additional information: Caller received his Comirnaty booster and the dose was administered to his tendon and not to his muscle. Caller asked if this interfered with the uptake of the vaccine, if he needs to get another dose, or what the effect of this administration is. Patient was not very happy. He always respected Pfizer but this is definitely not one of the respectful things that they've done so he was gonna hang up now as it seemed to him that's an irresponsibility on Pfizer's part. Patient won't be taking the survey. In Oct, he went to a branch of the local Health Department for his booster, which was put the in his tendon, not the muscle. He had discomfort and he was seeing a physical therapist. As a senior with pulmonary and cardio issues, will there be follow on injections. This report was not related to a study or programme. No investigation assessment. Reporter states he had no problems with the first two shots. He got his booster shot at the health department and the stupid nurse put it into his tendon and not his muscle. Caller states that he attempted to go online, but it referred him to call this number. Caller states that calling has been frustrating because he just wants a fast answer and has had to go through all of these options. Caller verifies that he was speaking about the booster dose of the Pfizer Covid Vaccine. Caller states that he has been doing physical therapy for was arm. Says it was very difficult to sleep on the affected arm. Caller states that he has Barrett's esophagus and needs to sleep on his left side. States he tosses and turns a lot. At physical therapy they worked the mobility around well. States he does exercises at home. Caller says that his physical therapist was not satisfied with their progress and instructed the caller to keep working it at home. Caller says that he saw online there was a syndrome related to people who get injections wrong and 15 percent respond to follow up treatment. Caller states he was hoping to be in the 15 percent. Caller denies any other labs, testing, or treatments relevant to these events. Vaccination Facility Type was Public Health clinic/Veterans administration facility. No Prior vaccinations (within 4 weeks) were given. Health Department nurse administered the covid Booster into a tendon in the right arm. This necessitated the services of a physical therapist at results physiotherapy for several weeks. Pain and limited mobility were addressed. He was to return for further treatment if necessary.  Follow-up attempts are completed. No further information is expected.