This is a spontaneous report from a contactable consumer (patient). A 64-years-old female patient received BNT162B2 (Pfizer-Biontech Covid-19 Vaccine, Formulation: solution for injection, Lot Number: EL9265, expiration date: 31May2021), via an unspecified route of administration in left upper arm on 28Jan2021 11:00 as 1ST DOSE, SINGLE for COVID-19 immunization. The patient also took cetirizine hydrochloride (ZYRTEC), oral from 28Jan2021 (Batch/Lot number was not reported; Expiration Date: 2022) and ongoing, at 1 DF, daily for hypersensitivity and unspecified allergy shots (Batch/lot number: Unknown) administered 1 in each arm once weekly for allergy. The patient had not taken the allergy shot in previous two months. The patient medical history included a history of allergies all her life and asthma attack following flu vaccination 20-25 years prior so she did not take another one again. The patient was not given any other vaccine on the day of COVID-19 vaccination, had not received any other vaccine 4 weeks prior and had no history of any other prior immunization. Family history was none. Stated that she takes the normal medicines she always take, Pepcid and Prilosec for her stomach, Breo for breathing sometimes and the Zyrtec for when her allergies act up. Other times she may use a nasal spray, Azelastine-Fluticasone, to keep the allergies at bay. No further details provided. The patient stated that she took Covid-19 vaccine because she wanted to be protected, protect her husband, who is not in good health, family and community. The patient went to take her COVID-19 vaccine today (on 28Jan2021) and got there with no problems and had an allergic reaction to it. She stated she has had allergies all her life and was on allergy shots. Within 10 minutes of getting the Covid-19 vaccine she became hot, she thought she was having hot flashes. There was a hot rush to the face, her tongue started to sting all over that went to the roof of her mouth and lips. They felt like they were swelling, but she had no swelling of lips or mouth. She had taken a Zyrtec earlier this morning (on 28Jan2021) and had to take another one and had to be taken to the emergency room to be monitored to make sure it didn't get worse. The stinging slowed up and it didn't continue, and it gradually went away. They monitored her for a couple of hours maybe and she got out about 2pm. She got her shot at 11am. She stated that she has an allergist in the city and her previous allergist has retired last March so she was now seeing other allergies virtually. The patient stated she had a little numbness in the face, nose, and mouth, nothing dramatic, no stinging. Again, she mentioned her face was still a little numb, but there was no stinging, tingling, or swelling. They told her to monitor it for 12 hours and if it occurs again to contact her doctor or go back to emergency room. Doctors encouraged her to contact Pfizer to report this. She had allergy shots for the past 15 years, but was unable to provide the names, NDC, lot or expiry for allergy shots. She has not had any allergy shots for the past couple (2) months. The patient stated she was unable to provide NDC, lot or dose of Zyrtec she took on 28Jan2021. She stated that she had to end up taking 2 of them (Zyrtec). She took one in the morning (on 28Jan2021) about 8am and the other around 11am after the COVID-19 vaccine. No further details provided. She went to the emergency room due to the events. The outcome of the events became hot, thought she was having hot flashes/There was a hot rush to the face and stinging of tongue that went to the roof of her mouth and lips was recovering and the outcome of the event hypoaesthesia was not recovered. The action taken with Zyrtec and unspecified allergy shots was dose not changed.