a large rash 3 inches in diameter at the injection site with a burning sensation/on the injection site she had an almost 3 in diameter dark pink rash; a large rash 3 inches in diameter at the injection site with a burning sensation/ the area is tender but no terribly painful/she put it (baby oil) on because the arm was sore and she wanted to protect the skin around the area; small red, not a rash, and swollen area where the site was; small red, not a rash, and swollen area where the site was; chills; low grade fever; This is a spontaneous report from a contactable consumer ((patient, her significant other). A 70-years-old female patient received bnt162b2 (BNT162B2), dose 2 via an unspecified route of administration, administered in Arm on 13Feb2021 (Batch/Lot Number: GL9266) as SINGLE DOSE for covid-19 immunization. There was no patient medical history. There were no concomitant medications. The patient previously received first dose of bnt162b2 (BNT162B2) (lot number EM5318) via an unspecified route of administration on 23Jan2021 as a single dose for COVID-19 immunization. It was reported that he and the patient received the first dose of the Pfizer Covid 19 vaccine on 23Jan2021 and the second dose 13Feb2021. He did not mention what his specific side effect was. The patient began having chills and a low grade fever the second day after the injection and yesterday, day 3, (15feb2021) she noticed a large rash 3 inches in diameter at the injection site with a burning sensation. The rash is still there today (16feb2021). She applied baby oil after the injection at that injection site and she uses this regularly anyway. The patient came to the phone and stated it was a small red, not a rash, and swollen area where the site was. She used baby oil after her showers. She did not know if the baby oil might have caused the reaction since she did not experience this after the first injection. She said the area was tender but no terribly painful. She had applied a cold pack to the area and the swelling seems to be responding. They wanted to know this was an expectation, how long it will last and there was a way to treat it. He and his significant other had the second dose on 13Feb2021, so that was on Saturday. He was calling more about his significant other because on the second day which was Sunday she had chills and low grade fever and that dissipated over night, then yesterday (15Feb2021) she discovered that on the vaccination site, so on the injection site she had an almost 3 in diameter dark pink rash, it is almost circular and that area and there are spots outside of that area but it is over the vaccination or injection site. So he googled it to see if that can be a side effect and he found there are reports of that type of side effect and it appears it is rare and is sometimes referred to as COVID arm but he thought he would call and report this and find out if it something to concerned about or possible how it should be addressed. He was told from the writing of reports that this can develop with many vaccinations, that many vaccinations can have that kind of impact in the injection site. In his reading though it looks like it is a rarity with this vaccine that it maybe happens with 2 percent of the participants. He says he was not calling about himself he was calling about someone else who was there but she is not able to come to the phone. He says they both had the vaccine at the same time. She got the second dose 13Feb2021 and on Sunday 14Feb2021 she started having low grade fever and chills. The rash appeared or at least she noticed it on Thursday 15Feb2021. He says the low grade fever and chills have recovered completely but the rash is still ongoing. He would say it is about the same. he has not looked at it today but it was pretty big, it is a large rash. He says the only other thing she mentioned was that she put some baby oil on the skin that was about all, she put it on the vaccination site but that wouldn't do anything. He says she put it on because the arm was sore and she wanted to protect the skin around the area. He says it was a preventive thing, she likes to use baby oil. No Investigation Assessment. Outcome of the events low grade fever and chills was recovered in Feb2021 and other events was not recovered.