eye was swelling 24 hours after the shot; hives/Hives all over his back/Covered in hives; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP) from medical information team for a Pfizer sponsored program. The reporter is the parent.  A 12 year-old male patient received bnt162b2 (BNT162B2), administered in arm left, administration date 01Sep2021 16:30 (Lot number: FE3592, Expiration Date: Nov2021) at the age of 12 years as dose 2, single for covid-19 immunisation. Relevant medical history included: "viral hives" (unspecified if ongoing). There were no concomitant medications. Vaccination history included: Bnt162b2 (DOSE 1, SINGLE, Lot number: FSC3180, Expiry Date: Oct2021, Route, Anatomical Location: Injection; Right Arm), administration date: 11Aug2021, when the patient was 12 years old, for Covid-19 immunization, reaction(s): "Rash". The following information was reported: EYE SWELLING (non-serious) with onset 02Sep2021, outcome "recovered" (02Sep2021), described as "eye was swelling 24 hours after the shot"; URTICARIA (non-serious) with onset Sep2021, outcome "not recovered", described as "hives/Hives all over his back/Covered in hives". The event "hives/hives all over his back/covered in hives" was evaluated at the physician office visit. Therapeutic measures were taken as a result of eye swelling, urticaria.  Additional Information: Reporter stated that her 12-year-old son received the 2nd dose of the Pfizer-BioNTech Covid19 Vaccine last 01Sep2021 and experienced some side effects. Reporter stated that her son got his first dose of the Pfizer Covid 19 Vaccine and then developed a rash. Stated that the doctor cannot tell her about how long the rash may last. Reporter comes onto the line and verifies information received from the transferring agent. She clarifies that her son had these adverse events after his second dose of the Pfizer Covid 19 vaccine, not the first dose as was reported by the transferring agent.At first her son's eye was swelling 24 hours after the shot that lasted for about an hour and 8 days after the vaccine, he got hives and is still having those. She was wondering if anyone else's has reported this side effects and how long will it last. Reporter states that when her son was a toddler he would get viral hives whenever he was fighting off an infection. She states that he got the second dose of the vaccine on 01Sep2021. 24 hours after the vaccine he had eye swelling and gave her son Zyrtec and applied ice to his eyes. States the swelling lasted for maybe an hour; it was gone the same day. 8 days later he had hives all over his back. 12 days later he was covered in hives after the vaccine she forgot to give her son his Zyrtec on time and the hives came back. Says that some of them were as big as dinner plates. Says she has to give him Zyrtec right on time, or the hives come back. Caller states that without the Zyrtec on time daily, the hives are persisting. She took her son to an allergist and the allergist thinks it may be a reaction related to the vaccine. Reporter states that today was day 15 of these hives. When patient was a toddler he would sometimes get viral hives when he was fighting off an infection. States that the allergist thought maybe his current hives are the patient's immune system mounting a response. Reporter denies any other medications relevant to events and denies another other labs or testing relevant to events. States that they saw the allergist yesterday and they are going to test her son for PEG allergy once her son was off of the Zyrtec. No additional vaccines administered on same date of the suspect. Event covered in hives require a visit to physician office and not emergency room. Reporter states that she did not take her son to the emergency room because it was only skin related, his respiratory system was not affected. No prior vaccinations within 4 weeks. No adverse event following prior vaccinations.  No follow-up attempts are possible. No further information is expected.