Third Dose: what she thought was a dry throat; Third Dose: tongue was a little swollen; Third Dose: feeling a little tired; Third Dose: headache; Third dose: a little lightheadedness; booster; blood pressure was really high; Third Dose: low grade fever; Third dose: flu like aches and symptoms; This is a spontaneous report from a contactable consumer(patient).  A 70-year-old female patient received bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, Solution for injection, Batch/Lot Number: FF2589, Expiry date: unknown), via an unspecified route of administration, administered in Arm Left on 08Oct2021 (at the age of 70 years old) as dose 3 (booster), single for covid-19 immunisation. Medical history included body is severely sensitive, allergy, allergy to animal. She had a reaction to cats, yellow flowers, and hay. She had swollen eyes from being in a lumber store, can smell chemicals a mile away and has had a rash from latex and metal and she was allergic to her blood pressure medicine Concomitant medication(s) included losartan potassium (COZAAR), ibuprofen. Historical vaccine included bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, Solution for injection, lot: 5N6199, Expiry date: unknown), via an unspecified route of administration, administered on 07Mar2021 (at the age of 70 years old) as dose 2, single for covid-19 immunisation and got sick and also received bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, Solution for injection, lot EM1809/EM7809, Expiry date: unknown), via an unspecified route of administration, administered on 17Feb2021 (at the age of 70 years old) as dose 1, single for covid-19 immunisation and didn't feel great after the first dose. She had one tetanus shot in her 20s and had a little reaction to it. She got a rash from amoxicillin. There is no previous history of any allergies. The patient was taking Cozaar and ibuprofen medications prior to the event being reported. The patient did not receive any recent vaccines for any other conditions prior to the event being reported. The patient did not receive any recent vaccines for SARS-CoV2 other than Pfizer-BioNTech COVID-19 Vaccine prior to the event being reported. No additional vaccines administered around the time of the Pfizer suspect. The patient experienced (at the age of 70 years old) a little light-headedness on 08Oct2021, headache on 10Oct2021, low grade fever, flu like aches and symptoms, blood pressure was high on Oct2021, feeling a little tired on 12Oct2021 what she thought was a dry throat, tongue was a little swollen on 13Oct2021. She got the vaccine on 08Oct2021, and she had a little light-headedness, and it wasn't enough to concern her because she had some anxiety with this dose. She was sick for about 2 days- she had a bad headache, a low-grade fever, flu like aches and symptoms. These happened for 48 hours, and she got better. On Monday, 11Oct2021, she felt okay and did some stuff. Tuesday, she started feeling a little tired. Then by Wednesday at 5:30 am she went to the emergency room because she was awakened by what she thought was a dry throat. She drank water and went back to sleep. She woke up about 30 minutes later and noticed there was something different that had to do with her throat. Her tongue was a little swollen and then she went to the (withheld) emergency room. She was being treated and the emergency room hadn't had any case like her, so they didn't know what to do. She was taking 3 Zyrtec's a day and prednisone. The Zyrtec made her tired and she had not been sleeping well. She was not well now and not doing her normal things. She was preoccupied by the things that were happening. She was not ever admitted to the hospital. In the emergency room they said she was allergic to her blood pressure medicine, Cozaar, which she had been taking 4-5 years. The emergency room doctor told the caller to stop taking the Cozaar immediately. The emergency room doctor didn't think this reaction was from the covid vaccine. In the emergency room she was given a potent steroid, Decadron and observed her for 3 hours and then sent her home and told to call her doctor. The Decadron lasted 48-72 hours and she was with her daughter and the Decadron was wearing off and had to go back to the emergency room for the same thing. She had not taken another Cozaar to date and they put her on a different blood pressure medication. The second time she had to go to the emergency room was 72 hours after the first dose of Decadron. During the second visit to the emergency room, she got a second dose of the Decadron. That doctor didn't think it was an allergic reaction to the vaccine, but she had though this from the first moment. She never had problem with her Cozaar. She was on a new blood pressure medication, was on Prednisone for a week and double dose of Zyrtec, which was twice the max dose on the package. She was on 20 mg of Zyrtec and had to up it to 30 mg today. She was going to see an oral surgeon and scan her for oral cancer and general exam. The allergist wanted to put her on an immunosuppressant, and this was now a huge problem. She was being controlled with the prednisone and Zyrtec (lot GS14106, expiration date May2023) but was afraid the Prednisone will wear off and she will have the same problem again. She did not think the Zyrtec will control her symptoms and she had been of the Prednisone for 3 days and now she was starting to have problems. Adverse event required two visits to Emergency Room. The patient required medical intervention (Decadron). The patient underwent lab tests and procedures which included alanine aminotransferase: different, blood test: unknown result, full blood count: normal, haematocrit: normal on an unspecified date. Therapeutic measures were taken as a result of the events. The Reporter assessed Relatedness of drug to reaction(s)/event(s) As Related by  Introspection. The outcome of the events headache, low grade fever, flu like aches and symptoms, feeling a little tired blood pressure was high was recovering and of dry throat and tongue was a little swollen was not recovered.  No follow-up attempts are needed. No further information is expected.