had signs of rheumatoid arthritis.; fatigue/tiredness; swelling; joint pain; can't walk; hands swollen; inflammation/very much inflammation in her breast; Back pain; weighed herself; can't sleep at night; pain in her side that went away and just went up her arm and disappeared; This is a spontaneous report from a contactable consumer. An 84-year-old female patient received bnt162b2 (BNT162B2), dose 2 via an unspecified route of administration, administered in Arm Left on 10Feb2021 12:20 (Batch/Lot number was not reported) as dose 2, single (at the age of 84 years) for covid-19 immunisation. The patient's medical history included mastectomy from an unknown date and unknown if ongoing (many years ago, about 30 years ago), and ongoing high blood pressure which was diagnosed 6-7 years ago. Concomitant medications included spironolactone and losartan taken for high blood pressure, start and stop date were not reported. The patient received the first dose of BNT162B2 on 19Jan2021 at the age of 84 years for Covid-19 immunisation. The patient experienced fatigue/tiredness, swelling, joint pain on 14Feb2021; can't walk, hands swollen, inflammation/very much inflammation in her breast, back pain, weighed herself (weight increased), can't sleep at night and pain in her side that went away and just went up her arm and disappeared in 2021; had signs of rheumatoid arthritis on an unspecified date. The patient saw her primary care physician on 14Feb2021 for fatigue and joint pain and swelling and the HCP ordered blood work for her C-Reactive protein, it was supposed to be 3.0 and hers was 18.2 and had inflammation. She had to go on Prednisone for pain and it was 10mg three times. She experienced a lot of problems getting up in the morning and can't walk, hands swollen and can't get her shoes on and she was on Prednisone; states Prednisone relieves it and she received therapy for 4 weeks for pain and as long as she's on the Prednisone she felt good and right when she goes off of the Prednisone she's right back where she started. It was also reported that the vaccines were administered in her left arm because she had a mastectomy in her right arm and they do not like her to do anything there and that was where she had the first problem; and it just went from her right arm into her breast and she still has the blue vein from the Pfizer COVID Vaccine in her breast still; states she just had very much inflammation in her breast and pain in her side that went away and just went up her arm and disappeared; states she had swelling and stuff and it went from the side under her breast and went up that left arm and started with the other problems with swelling and feeling tired. The fatigue and tiredness and pain was kind of hard to tell if they are ongoing because she was on medication for that and still on Prednisone and was tired, can't sleep at night sometimes and when she is on the Prednisone it was really good and she can't sleep at night which might be from her back when she was real bad before taking Prednisone and she had swelling and stuff and had problems. The patient began taking prednisone on 24May2021 but that might not be the first time she took it and she was unsure. The patient also takes Gabapentin 300mg three times per day by mouth and she started it on 29Jun2021 for her back and not for the other things. The patient took regular over the counter Tylenol Extra Strength 500mg and does not know when she began taking that and was on so much stuff including opioids for when her back went out and guesses she was on Gabapentin after that time; states the Tylenol has lot AEC214, expiry date Feb2025. The patient has no name for the opioids and only took them for 5 days and then went off of them and went on the Gabapentin; states the opioids are pretty strong and then her intestines were such a mess and she got off of them and threw them away. Patient stated she was very anxious to get the Pfizer COVID Vaccine. States she just depended on her HCP and went to see the rheumatologist that was recommended along with therapy and they said she had signs of rheumatoid arthritis. Patient stated she has been very healthy and people said she can't be age 85 and she did not feel like it but the vaccine put her down. Patient stated she looked like she was age 70 until the Pfizer COVID shot and now looks like she was 90; patient just weighed herself. The outcome of the events fatigue/tiredness, joint pain, back pain was not recovered, and unknown outcome for the rest of the events.