rash reaction/Rash that worsened and is itchy and bumpy; had a rash under the same area. It was under the lower breast with a size of a handprint and strawberry red in color; The rash was itchy but tolerable and looks terrible. It was so bright red; rash reaction/Rash that worsened and is itchy and bumpy; This is a spontaneous report from a contactable Consumer (patient). A 91-year-old female patient received first dose of bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE; Solution for injection; Lot number: EL1283; expiration date: Apr2021) via an unspecified route of administration in left arm on 20Jan2021 (at the age of 91-year-old) as single dose for COVID-19 immunization. Relevant medical history of the patient included continual bladder infection and has a problem with her eyes, usually has skin rashes off and on, skin problems for a long time. Concomitant medications included Nitrofurantoin 50mg daily [start date: has been taking for 5-6 years and was ongoing] taken for Continual bladder infections. There was no history of any previous immunization with the Pfizer vaccine considered as suspect and no prior vaccinations (within 4 weeks). On an unspecified date in Jan2021, after receiving first dose of vaccine patient experienced rash reaction/rash that worsened and was itchy and bumpy. Reportedly, when patient got the first dose, she had a rash under her breastbone, she had never had it before, and it seemed like a coincidence. She then went to a dermatologist on Wednesday (10Feb2021) who said it was a fungus reaction due to sweating and not related to the vaccine. She wants to be sure we know this. When patient received the facts sheet with the first dose, she breezed through it and didn't pay much attention. She never has any kind if side effects people get normally. She does not have any problems with eggs. She received the second dose today [Lot EM9810, Expiry: Jun2021]. She has read the fact sheet. It says something about a rash. She has always had skin problems for a long time. The information indicated as rash everywhere. She thought it didn't pertain to her. She has always had a little rash under her brassiere. She thought it was maybe a heat rash. She has had skin problems all her life. It has been a little bit red. She has used Cortisone 10 off and on and it has worked good. On an unspecified date in Jan2021, from the last 3 weeks she has had a rash under the same area. It was under the lower breast with a size of a handprint and strawberry red in color. The rash normally goes away with Cortisone 10, but the rash was not going away. Patient had a rash for years but noticed it was getting itchier. It was something she has never seen and was lumpy like it has tags. She has had a rash with tags before, but this was larger. Tomorrow patient will visit to dermatologist. Patient usually has skin rashes off and on that goes away with Cortisone 10. This rash was not going away. It was itchy, and lumpy like it has tags. The rash was itchy but tolerable and looks terrible. It was so bright red. She was not sure what it was. Patient asked if anything the doctor can give her, so it goes away. Treatment included Cortisone 10. Outcome of the events were not resolved.  Follow-up attempts are completed. No further information is expected.