This is a spontaneous report from a contactable nurse (patient). An 84-year-old female patient received bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, lot number: ER8730), via an unspecified route of administration, administered in Deltoid Left on 26Mar2021 as 2nd dose, single for covid-19 immunisation. Medical history included cholesterol abnormal. Concomitant medications included cholesterol medication. The patient previously received first dose of bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, lot number: EN6202), administered in left arm on 26Feb2021 for COVID-19 Immunization. The patient states she had no immediate side effects. She states that two weeks, after the second dose (in Apr2021), she developed unbearable body aches, specifically in her arms and legs. The patient states she was unable to pick up her right leg and put it over her left leg. She states she is not getting better. The patient is asking if this is a side effect of the Covid vaccine, or is it from something else? She states she was healthy, she walked and was active, before the vaccine. The patient answers as there is very minimal improvement. She states that maybe there is some improvement because she has been taking Ibuprofen and Tylenol. The patient states her event has improved with the medications but they start to come back once the medications wear off. The patient stated she received her Pfizer Covid vaccine first dose in Feb and second dose in march. She stated 2 weeks after the second dose (in Apr2021) she is having terrible muscle aches in her arm and leg (calf muscle) she has to take ibuprofen to get through the day. The patient wanted to know about reports of it. She stated she has seen her doctor and done some tests. She has gone off her cholesterol medication and got checked for clots (no clots). The patient stated, "I got the vaccine in couple of week, I had no problem when I got the vaccine not even a sore arm. couple of weeks later I have developed excruciating pain and aching in my leg and my left arm. I went to the doctor and had whole panel of test and they ruled everything out  I don't have Lyme, they took me of  my cholesterol medication, I bought a new mattress, I am not sleeping in new mattress. I only take one medication cholesterol medication which I stopped and I am in agony and I wanted to know, if this is possibly connected to the COVID vaccine because I was really really healthy individual before they started." There is no additional Vaccines Administered on Same Date of the Pfizer Suspect, no prior Vaccinations (within 4 weeks), no AE following prior vaccinations, no patient's Medical History (including any illness at time of vaccination). The patient states she feels her medications are not relevant to the report. The outcome of the events was unknown.; Sender's Comments: Based on available information, a possible contributory role of the subject product,  BNT162B2 vaccine, cannot be excluded for the reported events.  There is limited information provided in this report.  This case will be reassessed once additional information is available. The impact of this report on the benefit/risk profile of the Pfizer product is evaluated as part of Pfizer procedures for safety evaluation, including the review and analysis of aggregate data for adverse events. Any safety concern identified as part of this review, as well as any appropriate action in response, will be promptly notified to Regulatory Authorities, Ethics Committees and Investigators, as appropriate.