As the Covid 19 vaccine was being administered it was very uncomfortable; administration of vaccine was painful / pain in that left arm; arm soreness / arm started feeling sore / arm soreness was independent of the administration of the Covid 19 vaccine; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP) from medical information team. The reporter is the patient.  A 64 year-old female patient received bnt162b2 (BNT162B2), administered in arm left, administration date 22Mar2021 11:30 (Lot number: EN6207) at the age of 64 years as dose 1, single for covid-19 immunisation. Relevant medical history included: "tendonitis in left arm" (ongoing). There were no concomitant medications. The following information was reported: VACCINATION SITE DISCOMFORT (non-serious) with onset 22Mar2021, outcome "recovered" (22Mar2021), described as "As the Covid 19 vaccine was being administered it was very uncomfortable"; VACCINATION SITE PAIN (non-serious) with onset 22Mar2021, outcome "not recovered", described as "administration of vaccine was painful / pain in that left arm"; PAIN IN EXTREMITY (non-serious) with onset 22Mar2021, outcome "recovered" (22Mar2021), described as "arm soreness / arm started feeling sore / arm soreness was independent of the administration of the Covid 19 vaccine". Therapeutic measures were taken as a result of vaccination site discomfort, vaccination site pain, pain in extremity. Additional information: The patient had the tendonitis in left arm for about 3-4 years (reported as maybe since 2017 or 2018). Treatment with Tylenol was taken for the events. Events were described as follows: It was reported that the administration of vaccine was painful, which the patient thought was odd. The patient was querying if she can get the second dose in the other arm. It was reported that the patient's family felt less discomfort during injection for this vaccine compared to other injections in past. The patient had the opposite.  The patient received her first dose of the Covid 19 vaccine yesterday on 22Mar2021 and she was a little concerned. She has arm pain and she's right-handed so she got the Covid 19 vaccine in her left arm and she had asked the person giving the vaccine if tendonitis would be an issue because she has tendonitis in the left arm. She was told that the tendonitis shouldn't be an issue. When the person gave the injection, it was very painful. She's received a lot of vaccines in her past and she's never had pain during the administration. That was concerning to her. Then an hour or two later, after the Covid 19 vaccine, she started getting pain in that left arm. The patient was wondering with this being the first Covid 19 vaccine round and side effects, could the tendonitis play a role in her arm pain. It was reported that everyone that she's talked to has had, if anything, less feeling as far as when the needle was injected and they felt nothing. As the Covid 19 vaccine was being administered it was very uncomfortable, it was painful. It was reported that she's a worry wart and was asking if it went in the right site. It was also reported that the vaccine itself was painful for some reason, she drove home after the vaccine, she was ok, no arm pain at that time but then a couple of hours later her arm started feeling sore. That arm soreness was independent of the administration of the Covid 19 vaccine that was painful. Her second Covid 19 vaccine was scheduled on 12Apr2021. The patient had no history of all previous immunization with the Pfizer vaccine considered as suspect, no additional administered vaccines administered on same date with the Pfizer vaccine considered as suspect, no prior vaccinations within 4 weeks, no adverse events following prior vaccinations and no relevant tests.  No follow-up attempts are possible. No further information is expected.