arthritis all over my body; sore arm / I start having a world pain from my feet, my ankles, my joints and stuff muscles it was kind of like tender and stuff; I start having a world pain from my feet, my ankles, my joints and stuff muscles it was kind of like tender and stuff; I start having a world pain from my feet, my ankles, my joints and stuff muscles it was kind of like tender and stuff; I was just hobbling; my back my everything hurt; my back my everything hurt; Bad headache; may be my knee went out; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A female patient received bnt162b2 omi xbb.1.5 (COMIRNATY (2023-2024 FORMULA)), as dose 1, single (Lot number: HD9876) for covid-19 immunisation. The patient's relevant medical history included: "Asthmatic" (unspecified if ongoing); "Knee replacement" (unspecified if ongoing), notes: never got rid of my cane. The patient took concomitant medications. Vaccination history included: Covid-19 vaccine (DOSE NUMBER UNKNOWN; MANUFACTURER UNKNOWN), for COVID-19 immunisation, reaction(s): "sore arm". The following information was reported: POLYARTHRITIS (medically significant), outcome "unknown", described as "arthritis all over my body"; PAIN IN EXTREMITY (non-serious), outcome "unknown", described as "sore arm / I start having a world pain from my feet, my ankles, my joints and stuff muscles it was kind of like tender and stuff"; ARTHRALGIA (non-serious), MYALGIA (non-serious), outcome "unknown" and all described as "I start having a world pain from my feet, my ankles, my joints and stuff muscles it was kind of like tender and stuff"; GAIT DISTURBANCE (non-serious), outcome "unknown", described as "I was just hobbling"; BACK PAIN (non-serious), PAIN (non-serious), outcome "unknown" and all described as "my back my everything hurt"; HEADACHE (non-serious), outcome "unknown", described as "Bad headache"; ARTHROPATHY (non-serious), outcome "unknown", described as "may be my knee went out". Therapeutic measures were taken as a result of polyarthritis, pain in extremity, arthralgia, myalgia, back pain, headache.  Clinical course details: On Saturday, patient have been in perfectly good health and she have gone to doctor because she have pain in her ankle. On Saturday, she had the Pfizer shot (Comirnaty vaccine) and she did not have any problem with the prior shot of vaccines, it was just sore arm. This time around, she did not quite get the sore arm right away. She went about her day and slowly but surely that was the kicked in, she start having a world pain from her feet, her ankles, her joints and stuff muscles, "it was kind of like tender and stuff", and she was just hobbling the rest of the afternoon day and at night it was just incredibly painful to just to get into bed and "you know how you sit down put two legs over and you trying to cover yourself", it was just really painful and then on Sunday, all day Sunday, she was super hobbling, her knees, her ankle, her back, everything hurt. She stated that "she saw well this kind of wired pain and kind of saw around this happen so like I addressing after I have my shot because normally I got my day take it easy first day that I have the COVID shot and just got back my day but I have got arthritis and I am asthmatic and I have got arthritis all over my body so all my joints and stuff my knees my back was hurting my ankles were hurting and I still have a sore arm but I mean I am not focusing on the arm so much, it was just (incomplete sentence)". She had a headache, pretty bad headache. She cannot take a lot of medicines (unspecified medication), she do not take a lot of medicines. Once in a while she take Tylenol (Treatment) then on Saturday, she did take Tylenol arthritis because she was "thinking may it just effecting me in that way". It was further reported that patient have asthma medicine. She was just in a world of pain and she did not think about it but she thought she heard something like muscle fatigue with this shot, but she thought well that was not a big deal but when she started so like move around in her house just to get up from the sitting position and walking, she needed to get her cane because years ago she had. Five or six years ago, she had a knee replacement and she never got rid of her cane. She was using the cane because she was in so much pain and she have contacted her doctor, she saw her for her ankle because she was having a lot of problems in her ankle and she did not think that it was a big deal but then again she examined her and anything like that. "She just come back from vacation or whatever and she was just thinking why are you just you know going on about things but I told the office, I told the office the girl they called for doctor that I am excruciating pain and then hobbling". On Monday, that was why she called the office but she stated that "I did not really associate may be it was a shot and I am still in pain, have not able to make any kind of appointment or anything like that may be my knee went out may be I need to say an orthopedic surgeon but the thing is that I am still kind of like in this, stuck. I looked at the Pfizer that is what I have the Pfizer shot and I had it on the 7th, on Saturday and I do not know what is going on? But I am like in a lot of pain.".