migraine; flare pain in herleft elbow; headache; pain in her left wrist and left elbow; pain in her left wrist and left elbow; squeezing excruciating pain in her right upper arm; This is a spontaneous report from a contactable consumer or other non hcp. A 67-years-old female patient received BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, formulation: Solution for injection, Batch/lot number was not reported) dose number unknown via an intramuscular route of administration in Arm Left on 22Jul2021 04:00 (age at vaccination 67years old) as single dose for covid-19 immunisation. Tofacitinib citrate (XELJANZ XR), via an unspecified route of administration from Nov2020 (Batch/Lot Number: EH9982; Expiration Date: 31Jan2023) and ongoing, at unspecified dose for rheumatoid arthritis. Medical history included back pain, rheumatoid arthritis, phlebitis, all from an unknown date and unknown if ongoing she has had phlebitis in her legs before. Concomitant medication(s) included oxycodone (OXYCODONE); oxycodone hydrochloride (OXYCONTIN CR); leflunomide (LEFLUNOMIDE) all taken for an unspecified indication, start and stop date were not reported. The patient experienced squeezing excruciating pain in her right upper arm on 22Jul2021, headache, pain in her left wrist and left elbow on 23Jul2021, migraine, flare pain in her left elbow on an unspecified date. Clinical course was reported as she had Pfizer COVID Vaccine on Thursday, 22Jul2021 at four o'clock. She had called Pfizer prior to that because she is on Xeljanz XR for rheumatoid arthritis. She got the vaccine and last night she got a squeezing excruciating pain in her right upper arm. She didn't know if it was coming from her shoulder blade down. She went to urgent care and was told it is not a blood clot. At urgent care they could say what it isn't. They don't have cat scans available. She doesn't feel up to going to see her rheumatologist because it is a 50-mile round trip. At Urgent Care she was given Prednisone 50mg to take for 5 days. She took it as soon as she got home. She saw them at 9:00AM. She went and laid down at 1:00pm and just got up. She has a tremendous headache. She is having flare pain in her left elbow. The shot was in left arm. When the pain was in her right arm, she didn't think about it being related to the vaccine. Now she is having pain in her left wrist and left elbow. Her headache feels like it is close to a migraine but not quite there. She was told at Urgent Care to go see ortho or her rheumatologist. She didn't want to go the hospital or ER. She went to make sure she didn't have a blood clot because she has had phlebitis in her legs before. It was not hot to touch or red, but she just wanted it checked out. She wanted to know if it was a flare or not. She was told at urgent care it was acting like a frozen shoulder. Caller's husband has had that before and didn't have pain associated with it. This happened in close proximity. She wants to call rheumatologist tomorrow and ask for blood test and see if she is having a flare. The rheumatologist can look at inflammation numbers. She is not sure if the vaccine can create the flare. She knows that she is the research because they don't do research on people with immune compromise or organ transplant. She knows that is why it is important to report. She went to (facility). She didn't have any recommendation as to what to do except to take prednisone in case it was a rheumatoid arthritis flare. she is on Xeljanz XR and Leflunomide. She has been on Xeljanz XR since Nov2020 and has not had a flare. Not one. To all of a sudden have familiar pains. She is on Oxycodone for her back. She has been on Oxycodone for 12 years. That medication doesn't touch this pain. Pfizer COVID Vaccine: the lot number is either EW0198 or FW0198. Also written on the card is CVS 2431. She received the vaccine at (facility). Xeljanz XR she gets through Pfizer's Patient Assistance Program. She doesn't see the NDC. There is a pharmacy label on the bottle. Leflunomide: it comes from the pharmacy. It is 20mg. Lot number: 2101330, Expiration date: 28Feb2023, Manufacturer: Zydus. Caller clarified that she takes both Oxycodone and Oxycontin. Oxycodone: comes from pharmacy and is in pharmacy vial. She doesn't have NDC, lot, and expiry to provide. Takes 5 mg at the time and can take up to five a day. Oxycontin: it is Oxycontin CR 10mg. She takes one a day. She was taking two, but then she lost 50 pounds and her pain was associated with BMI. It comes from Perdue with copy card. It is in the pharmacy vial. She doesn't have NDC, lot, and expiry to provide. Pain in Right Upper Arm: it is ongoing. She took one of the 50mg Prednisone and she can only move her arm away from her side about half a foot, but not anymore. She received the Prednisone from the clinic. She was given five 50mg pills. Caller doesn't have NDC, lot, and expiry for the Prednisone. Headache: yesterday she had an echo headache. She took Tylenol and she didn't feel it anymore. The patient underwent lab tests and procedures which included body mass index: she lost 50 pounds on unspecified date her pain was associated with BMI. The clinical outcome of the event headache, squeezing excruciating pain in her right upper arm was recovered, and other events was unknown. Therapeutic measures were taken as a result of headache, squeezing excruciating pain in her right upper arm.   Follow-up attempts are completed. No further information is expected.