This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP) from medical information team. The reporter is the patient. A 40 year-old female patient received bnt162b2 (BNT162B2), intramuscular, administered in arm right, administration date 13Jul2021 (Lot number: EW0198) at the age of 40 years as dose 1, single for covid-19 immunisation. Relevant medical history included: "COVID", start date: Apr2020 (unspecified if ongoing), notes: She had COVID in Apr2020 and she does not want to get the Delta Variant; "seasonal allergies" (unspecified if ongoing), notes: she also took a Zyrtec which she takes daily for seasonal allergies; "Congenital Adrenal Hyperplasia" (unspecified if ongoing), notes: She was born with CAH, Congenital Adrenal Hyperplasia which is a genetic disorder; "Hypothyroidism" (unspecified if ongoing). Concomitant medication(s) included: LEVOTHYROXINE taken for hypothyroidism, start date: Oct2015; ZYRTEC [CETIRIZINE HYDROCHLORIDE] taken for seasonal allergy. The following information was reported: PRURITUS (non-serious) with onset 14Jul2021, outcome "recovering", described as "itchy head/Forehead was itchy/her forehead, which she later clarified was the top of her head near her hair line, was itchy"; RASH (non-serious) with onset 14Jul2021, outcome "recovered" (Jul2021), described as "rash on the neck and arm opposite of injection site/Rash on injection site arm, stomach and chest"; HYPERSENSITIVITY (non-serious) with onset 14Jul2021, outcome "unknown", described as "she had an allergic reaction"; FEELING ABNORMAL (non-serious) with onset 14Jul2021, outcome "unknown", described as "It was uncomfortable". Therapeutic measures were taken as a result of pruritus, rash, hypersensitivity, feeling abnormal.Additional information: Patient had symptoms from the first dose of the Pfizer Covid 19. After first dose she experienced "itchy head", rash on the neck and arm opposite of injection site. This subsided and then two to four days later rash came back at injection site arm, stomach and chest. This lasted for a few days then subsided. She called her HCP and was instructed by her doctor to take Benadryl. Consumer told her doctor's office that it felt like an allergic reaction and she had read this on the "website". No further events/side effects described by consumer. She has spoken to her Pharmacist (two different pharmacists) and is supposed to go tomorrow. She explains she has received no clear guidance from her HCP and pharmacist. She had one pharmacist tell her that there is no way that what she experienced reaction wise could have been from the Pfizer Covid 19 vaccine. No specific vaccination dates shared by patient. She had a reaction that is not common after receiving the first dose and she would like some guidance about getting the second dose. A day after she got the vaccine, her forehead, which she later clarified was the top of her head near her hair line, was itchy and she had a terrible rash over neck and opposite arm that she got vaccine on. She took Benadryl and she could not get rid of it. The Benadryl would make it subside, but once it wore off, it would come back. It was uncomfortable and it was like she had an allergic reaction. After a couple of days, it went away and then it came back on the arm that she got the vaccine in and on her stomach and chest. She got the vaccine on 13Jul2021, and reaction started 24 hours later. She said the itchiness in the top of her head where her hair is continued for a couple of days. It was an indication that she would break out in a rash. Her head got itchy and 20 minutes later, she got the rash over her neck and it kept happening. The rash went away for a couple of days after she had it for 3-4 days. Around a week after initial reaction of having the rash for 3-4 days and subsiding for 2-3 days, then it came back for 2 days and then it went away and so far so good. She has not had any since. She said the shot was on the upper shoulder area on her right arm. Vaccination was given at time of around 10:00. The patient stated that the anatomical location of administration of vaccine was Injected into outside of right arm and she is sure that there was a muscle. The vaccine not administered at Military facility. There was no previous immunization with the Pfizer vaccine considered as suspect. No additional vaccines administered on same date of the Pfizer suspect. No AE(s) require a visit to Emergency Room and Physician Office, she just called her doctor and she told her to take Benadryl and she took it and she also took a Zyrtec which she takes daily for seasonal allergies. She does not have the lot and expiration for either.. She was never diagnosed with seasonal Allergies, she just knows she has it and takes an allergy medication for it when she needs it. She was born with CAH, Congenital Adrenal Hyperplasia which is a genetic disorder. No follow-up attempts are possible. No further information is expected.