hardly walk; extreme muscle and joint pain; extreme muscle and joint pain; sore arm; The initial case was missing the following minimum criteria with [unspecified AE]. Upon receipt of follow-up information on [23Mar2021], this case now contains all required information to be considered valid.  This is a spontaneous report received from a contactable consumer or other non-health care professional (Patient) via a Pfizer-sponsored program. A 69-Year-old female patient received bnt162b2 (COMIRNATY, PFIZER-BIONTECH COVID-19 VACCINE, formulation: solution for injection; batch no: not reported/Lot number: EL9266) via an unspecified route of administration administered in arm left on 16Mar2021 11:30 AM (at the age of 69-years-old) as dose 1, single for covid-19 immunization. Medical history included Rheumatoid arthritis from an unknown date to unknown if ongoing which patient had 11 years ago was when she first came down with it, at that time it did not stop her from Martial Arts, exercising, and functioning. Concomitant medication included Minocycline taken for Rheumatoid arthritis from an unknown date unknown if ongoing, however she was not on an immune suppressant drug. No Additional Vaccines Administered on Same Date of the Pfizer Suspect. No Prior Vaccinations taken within 4 weeks of vaccination. She also stated that had an Extreme severe reaction to Levaquin, 9 years ago, since then she has been hypersensitive to anything and she cannot even take Aleve and it could be possible she was sensitive prior, or it could be general. It was reported that after the first dose of the Pfizer covid 19 vaccine patient got side effects, went through hell the first week and asking the efficacy of first dose. On 17Mar2021, patient experienced with extreme muscle and joint pain, sore arm and on an unspecified date, patient experienced with hardly walk. Adverse event did not require to visit Emergency Room and Physician Office. She was considered not getting the second dose of the vaccine. Investigation Assessment was reported as no. Outcome of the event extreme muscle and joint pain was recovered with sequel on 22Mar2021, sore arm and hardly walk was unknown.  Description of complaint: She was calling about the Covid Vaccine, she received the first injection and went through hell the first week, she had extreme muscle and joint pain. She has Rheumatoid Arthritis however she is not on an immune suppressant drug. 1 medication she takes is minocycline and it will suppress B and T cell function in the immune system, but the covid vaccine takes the T cell function to fight and attack, but her minocycline suppresses the T cell and is not functioning with her. The Date of First Dose was Last week Tuesday 16MAR2021 at 11:30AM. The Next day on 17MAR2021 she had a sore arm, which was expected, but it started kicking in also on 17MAR2021 the extreme muscle and joint pain, she could hardly walk, she at first thought maybe she is having flare but nothing was swollen, she has had enough flares to know, this lasted for 4 days. By Saturday 20MAR2021 it started to subside in the afternoon, caller states that she has recovered with lasting effects. She has had joint pain prior to this that she is still dealing with, but the joint pain was also prior to the injection however it was more emphasized or pronounced with the vaccine. The Joint Pain is in all joints, arms, knees, hips, and neck. She takes Minocycline 3 times a week, on Monday, Wednesday, and Friday, and on those days she takes it twice a day, 100mg in the morning and in the evening. When queried for Minocycline Lot, Expiry, and Manufacture, caller states that she does not think anything further of it, she also states that it was probably the generic she is receiving, she declined to provide further information, she states that it is not related.  No follow-up attempts are needed. No further information is expected.