Rash on on her arms; Very itchy on the elbows.; It was itchy; Some of the bigger splotches turned light brown and peeled off missed; This is a spontaneous report from a contactable consumer reported for a patient (Mother). A 88-years-old female patient received first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, Solution for injection, Lot number: EL9262, Expiration date: unknown) via an unspecified route of administration, administered in right arm on 21Jan2021 (age at vaccination was 88 years) as dose 1, single for COVID-19 immunization. The patient's medical history included ongoing blood pressure and hives (her mom has had reaction to Sulfa drugs and had hives before). Concomitant medications included levothyroxine sodium taken for an unspecified indication, losartan taken for blood pressure (he takes Losartan as needed. The doctor said if her blood pressure goes over 140 for her to take it. She was usually low and that was why she stopped taking it daily. When she has spells where her blood pressure is elevated she takes the pill for a few days until it comes down), cyanocobalamin (B12 [CYANOCOBALAMIN]) taken for B12 (gets B12 injection because she was low on B12. She gets it every month or two through her doctor. She hasn't had it near the time she got the vaccine though). There was no history of any previous immunization with the Pfizer vaccine considered as suspect. No additional vaccines were administered on same date of the Pfizer Suspect. The patient got the vaccine in the right arm because the nurse said the second one causes more of a sore arm. She gave it in the right thinking the second one would be in the left. It was reported that when the caller's mom had her shot five weeks ago she was fine. On an unspecified date, the patient got a rash on her arms. It was splotchy. Very itchy on the elbows. The caller's mom didn't show caller the rash until a week later, but her mom had told her that it was there 3 to 4 days after the vaccine. It wasn't a huge bother. It was itchy. It comes and goes. Some days she had spots and other days didn't. Some of the bigger splotches turned light brown and peeled off. The little ones seem to come and go. She thought it was a little overall better. It was the inside of her elbows that were mainly itchy on both sides. She had used Cortisone cream (it was the CVS brand. Her mom just started it yesterday and it was what caller had on hand. It was 1% hydrocortisone), but she may have to go to a dermatologist. She hadn't taken anything new. She called the doctor, but he didn't think it was related to the shot since it was several days later. Her mom saw the doctor this past Monday and he still didn't think it was vaccine related. The caller's mom already had the appointment on Monday for a six month check-up. Her mom thought she had a urinary tract infection. She was waiting on urine culture on an unspecified date. That had been going on for a few days. The patient already had the appointment and her doctor looked at the rash. They did call the doctor about the rash about 3 weeks ago and they didn't think it was related per the CDC guidelines. The patient showed the doctor the rash at her appointment on Monday, 22Feb2021. The caller asked if anyone had that kind of rash lingering after the shot. The caller wanted to make sure. She looked at the reaction list. One of the side effects listed as severe allergic was a bad rash all over the body. She wouldn't say the rash was all over the body. It was just on the arms. Some days it looked better than others. There was a Product Complaint. The patient was due for the second shot today. It was 5 weeks ago when she got the first shot. She was at 35 day and asked if that was ok. The outcome of the events was unknown.  Follow-up attempts are completed. No further information is expected.