worsening of his allergy symptoms; itching /running eyes/ eyes were itching; sneezing; This is a spontaneous report from a contactable consumer (patient). A 43-years-old male patient received BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, Batch/Lot Number: ER8732, Expiry Date and NDC number were unknown), via an unspecified route of administration, administered in left arm on 01Apr2021 09:15 (age at vaccination 43-Year-old) as dose 1, single for covid-19 immunisation. Medical history included ongoing seasonal allergy, ongoing severe pain for the last couple years, allergic to the cat. There was not any previous immunization with the Pfizer vaccine considered as suspect, no additional Vaccines administered on same date with the Pfizer vaccine considered as suspect, no Prior Vaccinations within 4 weeks no adverse event prior vaccinations. Concomitant medication(s) included cetirizine 10mg once per day in the morning, taken for seasonal allergy from an unspecified start date and ongoing; glucosamine taken for an unspecified indication from an unspecified start date and ongoing; ibuprofen 200mg tablets in the morning then 2-4 tablets in the evening, taken for pain from an unspecified start date and ongoing; acetaminophen 500mg tablets in the morning, taken for pain from an unspecified start date and ongoing; dextroamphetamine hydrochloride 10mg in the morning, taken for an unspecified indication from an unspecified start date and ongoing, probiotic and Multivitamin. On 01Apr2021 the patient experienced worsening of his allergy symptoms, itching /running eyes/ eyes were itching and sneezing. The patient received his first dose of the Pfizer covid vaccine on April 1st and before the vaccine he took Cetirizine antihistamine for his seasonal allergies and today also. yesterday after dinner he experienced worsening of his allergy symptoms, eyes were itching and running and sneezing a couple times. The patient was reported about the Covid 19 vaccine. He received his first dose yesterday, 01Apr2021 at 0915 and he didn't know, his wife just told him that he wasn't supposed to take an antihistamine in the morning before getting his Covid 19 vaccine. Yesterday after the Covid 19 vaccine his allergies really started kicking in. Is this a side effect of the Covid 19 vaccine or a reaction with his allergy medication? He took his antihistamine yesterday morning before getting the Covid 19 vaccine. He takes Costco brand Allertec which is Ceterizine Hcl 10mg once per day in the morning. He also takes 10mg of Adderall but the generic dextroamp-amphet ER in the morning. He also takes a multivitamin, glucosamine, and a probiotic. He takes Ibuprofen and Acetaminophen as needed. He reported he's having worsening allergy symptoms. He has pretty bad seasonal allergies and his wife has a cat and he's allergic to the cat. Yesterday his eyes were itching and running, and he sneezed a couple times. This morning his eyes were itchy again. He's been staying hydrated and drinking lots of water. His wife and him have been married for at least 8 years. His wife had the cat before they got married. The cat has its own room in the house, so he was segregated from the cat most of the time. He started noticing his symptoms probably around dinner time yesterday, 01Apr2021. Maybe 6:00PM. He doesn't know if he was paying attention to his allergy symptoms or ignoring them. He reported the itchy, runny eyes are staying about the same. He took his vitamins and allergy pills and Adderall as he usually does, and his eyes are still a little itchy. He would also like to add he had severe pain for the last 2 years. He was working with the  to try and get compensation. For the severe pain he takes 4 ibuprofen tablets in the morning and 2 acetaminophen tablets. He sometimes take 2-4 more ibuprofen tablets in the evenings but he usually only takes the acetaminophen once during the day. He usually doesn't take the acetaminophen in the evening. The events did not require a visit to Emergency Room or Physician Office. The outcome of the event worsening of his allergy symptoms was unknown, while the outcome of itching /running eyes/ eyes were itching, and sneezing was not recovered.  Follow-up attempts completed. No further information expected.