She felt like she needed to carry her left arm; whole arm was sore from the shoulder to her hand and on the inside and the outside of her arm, pain permeated to the back of her neck under her shoulder blades; whole arm was sore from the shoulder to her hand and on the inside and the outside of her arm, pain permeated to the back of her neck under her shoulder blades; whole arm was sore from the shoulder to her hand and on the inside and the outside of her arm, pain permeated to the back of her neck under her shoulder blades; This is a spontaneous report from a contactable consumer(patient). A 75-years-old female patient received BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, Formulation:Solution for injection, Batch/Lot Number: EN6204 and Expiration date: unknown) via an unspecified route of administration, in left arm on 12Mar2021 (at the age of 75-year-old) at 13:00 as dose 1, single for covid-19 immunization. The patient medical history and concomitant medications were not reported. The patient had not received any other vaccines within 4 weeks prior to the COVID vaccine. The patient had no history of previous immunization with the Pfizer vaccine considered as suspect. There was no additional vaccines were administered on the same date of the Pfizer vaccine. The patient had no adverse events following prior vaccinations. The patient stated that she had her first Covid 19 vaccine on 12Mar2021 and she knew one of the side effects would be soreness at the injection site. And in her own mind, she thought soreness at the injection site was where she got stuck by the needle. But this was her whole arm, and she got the Covid 19 vaccine on the 12Mar2021, on a Friday and her arm got sore on Sunday, 14Mar2021.On 15Mar2021, she felt like she needed to carry her left arm. It was the whole arm from the shoulder to her hand on the inside and outside or her arm. The pain permeated to the back of her neck under her shoulder blades. If she tried to lean over or sleep it was very difficult. She thought that soreness at the site would be a symptom but she had no idea that it would hurt this bad. When probing for specific event details she reports the pain was not as great as it was on the 14Mar2021 but it still makes her holler out sometimes if she moves in the wrong way. She feels like it should have subsided. The patient had no fever, chills, and nausea. Patient wants to know how long the soreness was going to last and should she get the second Covid 19 vaccine? The patient was due for her second Covid 19 vaccine on 02Apr2021, and she was kind of scared, she got the Covid 19 vaccine in her left arm. She was right handed and her left arm was still sore. The patient stated that for instance if she was reaching for something, she has to strain to get it with her right hand as she still feels the pain in her left arm. It was like it was down in the nerve. When she thinks about getting the Covid 19 virus she reports that side effect was not so bad. The patient reported that the pain started on Sunday evening, 14Mar2021. On Monday, 15Mar2021, she felt like she needed to have her arm in a swing as she felt like she was carrying that left arm. It had gotten better so on 14Mar2021 through the 19Mar2021 she said her pain level on a scale of 1 to 10 was a good 12. On 23Mar2021,(Today) she stated the pain was like a 6 or 7. The consumer stated that the adverse events did not result in emergency room visit or physician office visit. The clinical outcome of the events was recovering.  No follow-up attempts are possible. No further information is expected.