arm pain and swelling; arm pain and swelling; couldn't move her arm; tender to the touch; itchy scratchy feeling to it; it was very warm to the skin; Moderna first dose was given 02Mar2021, second dose was given 30Mar2021, Third dose was 12Nov2021 and Fourth dose was given 30Sep2022; This is a spontaneous report received from contactable reporter(s) (Physician). The reporter is the patient.  A 73-year-old female patient received BNT162b2, BNT162b2 omi ba.4-5 (BNT162B2, BNT162B2 OMI BA.4-5), on 30Sep2022 as dose 4 (booster), single (Batch/Lot number: unknown) at the age of 73 years, in right arm (right upper arm muscle as reported) for covid-19 immunisation. The patient's relevant medical history was not reported. There were no concomitant medications. Vaccination history included: coviD-19 vaccine moderna (first dose, Batch/lot number: 001821A), administration date: 02Mar2021, when the patient was 72-year-old, for COVID-19 immunization, reaction(s): "stiffness", "small amount of swelling"; coviD-19 vaccine moderna (second dose, LOT: 046A21A), administration date: 30Mar2021, when the patient was 72-year-old, for COVID-19 immunization; coviD-19 vaccine moderna (Third dose, LOT: 034121A), administration date: 12Nov2021, when the patient was 72-year-old, for COVID-19 immunization. The following information was reported: INTERCHANGE OF VACCINE PRODUCTS (non-serious) with onset 30Sep2022, outcome "unknown", described as "Moderna first dose was given 02Mar2021, second dose was given 30Mar2021, Third dose was 12Nov2021 and Fourth dose was given 30Sep2022"; PAIN IN EXTREMITY (non-serious), PERIPHERAL SWELLING (non-serious) all with onset Oct2022, outcome "recovered" (Oct2022) and all described as "arm pain and swelling"; MOVEMENT DISORDER (non-serious) with onset Oct2022, outcome "recovered" (Oct2022), described as "couldn't move her arm"; SKIN WARM (non-serious) with onset Oct2022, outcome "unknown", described as "it was very warm to the skin"; PRURITUS (non-serious) with onset Oct2022, outcome "unknown", described as "itchy scratchy feeling to it"; TENDERNESS (non-serious) with onset Oct2022, outcome "unknown", described as "tender to the touch". The events "arm pain and swelling", "couldn't move her arm", "tender to the touch", "itchy scratchy feeling to it" and "it was very warm to the skin" required physician office visit. Therapeutic measures were taken as a result of pain in extremity, peripheral swelling, movement disorder, tenderness, pruritus, skin warm. The reporter stated that the patient want to find out where to call to give adverse reaction information for the most current booster from Pfizer. Also, clarified that it was a COVID-19 vaccine booster, but was unsure if it was COVID-19 bivalent vaccine. She just called because she had adverse reactions. She got this dose on 30Sep2022, and this would have been of the most current booster that was out, since she had had other boosters previously. This dose was her fourth shot, second booster. The patient stated that about COVID-19 vaccine booster that under her arm she felt from the elbow to under the arm pit, that was where all the pain was, excruciating pain, and swelling. She went to see the doctor on Tuesday and saw a technician instead, and her arm was swollen, it was unbelievable, and she couldn't move it, it was tender to the touch. She was glad she had a few shirts that would button in the front, otherwise she would have been in trouble since she couldn't lift her arm to pull the shirt over her head. She had pain if she touched it, and it was very warm to the skin, it had also itchy scratchy feeling to it, but she refused to scratch it. They told her what to do for the pain and what to put on it and told her not to use it, which she couldn't use it. She put IcyHot on it and took some Ibuprofen. She clarified that she used an IcyHot patch, which they told her she could only use it three times a day and not to exceed 8 hours of using it. She used a patch as opposed to a roll on, because it was enough just to lay a patch on there. She doesn't think the Ibuprofen helped, we all know Ibuprofen was for distinct pain, and she also hates taking pills. It was exactly one week later from taking it, the shot, that the swelling has subsided and the redness and rash was gone. She could lift her arm, not partially, but good all over again, and she started being able to move it on Wednesday to where she can get it above her head. She doesn't have pain, swelling, and the rash is all gone as well. She did not think it helped, she still was in pain and had to sleep on her left side, and she is a right side sleeper. She did not see a manufacturer on the Ibuprofen to provide, it just said ibuprofen. She wanted to call and report her adverse reaction because what she experienced went past what was on the list. The pain and swelling are normally at site where shot is injected, and hers was under her arm from her elbow to her under arm and it was big, red, and painful, and she couldn't lift her arm. Description of complaint: Ibuprofen: She did not think it helped, she still was in pain and had to sleep on her left side, and she is a right side sleeper.  No follow-up attempts are possible; information about lot/batch number cannot be obtained. No further information is expected.