hot and cold; Pain in opposite left arm, they say pain in right arm, I; Quite confused; Really bizarre; Muscular ligament pain; since the Booster shot had on me; Covid 19 booster; arm pain radiating down through his elbow and the outside portion of his  forearm,; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP) from medical information team. The reporter is the patient. Other Case identifier(s): US-PFIZER INC-202101587273 (PFIZER), US-PFIZER INC-202101739914 (Pfizer).  A 68 year-old male patient received bnt162b2 (BNT162B2), administered in arm right, administration date 27Sep2021 (Lot number: FF2587, Expiration Date: Dec2021) at the age of 68 years as dose 3 (booster), single for covid-19 immunisation. Relevant medical history included: "spinal surgery" (unspecified if ongoing); "vestibular impairment" (unspecified if ongoing); "difficulty swallowing" (unspecified if ongoing), imbalances, light headedness and difficulty swallowing. Caller states this is not connected to the vaccine.; "bone spur" (unspecified if ongoing); "vertigo" (unspecified if ongoing); "spinal fusion" (unspecified if ongoing); "imbalances" (unspecified if ongoing); "light headedness" (unspecified if ongoing); "He is shrinking" (unspecified if ongoing). There were no concomitant medications. Vaccination history included: Bnt162b2 (Lot number: EN6203, Expiration date: Jun2021., He got all 3 in his upper deltoid right arm he believed it was late morning), administration date: 02Mar2021, when the patient was 68 years old, for Covid-19 immunization, reaction(s): "Genral soreness"; Bnt162b2 (Lot number: EP7534., He got all 3 in his upper deltoid right arm he believed it was late morning), administration date: 23Mar2021, when the patient was 68 years old, for Covid-19 immunization, reaction(s): "Genral soreness"; Flu shot, administration date: 20Sep2021; Tetanus, reaction(s): "tenderness in the muscle tissues".  The following information was reported: IMMUNISATION (non-serious) with onset 27Sep2021, outcome "unknown", described as "Covid 19 booster"; PAIN IN EXTREMITY (non-serious) with onset 27Sep2021, outcome "not recovered", described as "arm pain radiating down through his elbow and the outside portion of his forearm,"; FEELING OF BODY TEMPERATURE CHANGE (non-serious), outcome "unknown", described as "hot and cold"; PAIN IN EXTREMITY (non-serious), outcome "unknown", described as "Pain in opposite left arm, they say pain in right arm, I"; CONFUSIONAL STATE (non-serious), outcome "unknown", described as "Quite confused"; ABNORMAL BEHAVIOUR (non-serious), outcome "unknown", described as "Really bizarre"; LIGAMENT PAIN (non-serious), outcome "unknown", described as "Muscular ligament pain; since the Booster shot had on me". Therapeutic measures were taken as a result of pain in extremity, feeling of body temperature change.  Additional information: Time the vaccination for booster dose was given around 4 o'clock in afternoon. Anatomical location was right upper deltoid. The patient had no additional vaccines administered on same date of the Pfizer suspect. Prior vaccinations within 4 weeks, the patient had flu shot in Sep2021. He had spinal surgery and as a result has difficulty swallowing and subsequent he had a bone spur and had a spinal fusion and that left him with vertigo. His first one was 5 years ago, and it has been a living hell with this invisible issue when everyone says he looks great. He will get 2-3 days of tenderness in the muscle tissues and would typically subside with any dose of the tetanus within a couple days, it's more typical of what he experiences. Caller relays this is so persistent. States his last recorded tetanus was 2008. Caller had the COVID booster 7 weeks ago, and he was still having difficulty with arm pain radiating down through his elbow and the outside portion of his forearm. This occurs especially when he is trying to bring his arm up to his chest. He was a combat medic in (unspecified). He didn't experience this to this extent with the first two shots. He is trying to understand why it is lingering so long. He does have a vestibular impairment. The arm pain started pretty quickly. He remembers icing it that evening and then it persistently radiating down from his elbow ligament down the ulnar side of his forearm. He tried multiple things including heat and cold on it. He tried analgesic creams and lotions on it. It just doesn't seem to alleviate it. He tried an Arthritis pain reliever/ anti-inflammatory, lot:147620 expiration Nov2023. That was the latest thing he tried. He tried Blue emu oil on it. It had lot number 20R13 and expiration Oct2023. He also tried a vanishing Bengay topical analgesic. He can't read off the tube so he has to get the box. It has lot: 27619CA. He tried homeopathic stuff including Arnicare Gel for muscle stiffness and swelling and bruising. It has lot: M9080219RWM24; expiration Aug2022. He tried a spray analgesic, like a lidocaine spray, it expired in Aug2021 so he doesn't use it any more. It is supposed to stop pain, arthritis pain and muscle aches. He doesn't have the lot. He also tried acetaminophen capsules, Tylenol extra strength 500mg, which are good through Jul2022. He used a gel pack that he would stick in the freezer and a rice bag that he puts in the microwave. He would just apply it to areas. It hasn't improved. It has persisted. He notices it particularly when he is trying to lift something or bring his arm up, or if he is trying to wave or something. This pain is in his right arm. He had to travel so as soon as they approved it for 65 and older, he got the booster. He had arrangements and wanted to get it before going to new York for his neurologist appointment. He was left handed so he doesn't normally use his right arm for a lot of stuff. He was getting old. It was considering that it was getting into colder weather there he will be shoveling snow. It was pretty chilly with snow showers for him. This was 7 weeks of pain and she informed him to check in with his medical people at home. The caller states it has been about 7 weeks including hot and cold. The caller stated that this pretty much started with in that day of getting the vaccine that he started noticing it. The patient administered flu shot in his right deltoid area a few days before he got his annual, he had that maybe 1 week before around 20Sep2021. They weren't approving the booster except for people that are immunocompromised then it changed, and he got it as he travels down states for his neurologist and it's frightening on mass transportation as people don't socially distance or wear masks. Soreness at arm for seven weeks post-Covid booster. Has tried analgesics, hot/cold therapy, can't raise arm. Did not experience same degree of soreness with primary series.  Follow-up attempts are completed. No further information is expected.