experienced a seizure/tonic clonic seizure; she was very confused; This is a spontaneous report from a contactable consumer (mother). A 14-year-old female patient (daughter) bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE), dose 2 via an unspecified route of administration, administered in Arm Right on 04Jun2021 (Batch/Lot Number: ER8735; Expiration Date: 31Jul2021) as DOSE 2, SINGLE for covid-19 immunisation. No medical history included. Concomitant medication included ascorbic acid (VITAMIN C) taken as vitamins from 2021 to an unspecified stop date took one time a day for three weeks). The patient previously vaccinated with bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE) dose 1 via an unspecified route of administration on 13May2021 (Batch/Lot Number: EW0168; Expiration Date: 30Aug2021) right arm as DOSE 1, 0.3 ML SINGLE for covid-19 immunisation. It was reported that the patient experienced AE after Pfizer COVID-19 vaccine. The reporter stated that the patient received two doses, and then experienced a seizure. The patient was was seen by practitioner, who referred her to call today. The patient got her first dose 13May2021, which was given during the day, before the evening, and injected in her right arm. The second dose was given 04Jun2021, and was LOT: ER8735, with EXP: 31Jul2021 about the same time of day in the same place on the same arm. It was stated that the second dose was given 24 days after (as reported) the first dose. The patient had no side effects of getting the vaccines for a day or two afterwards, nothing. Had no seizures before, which is why they were concerned. It was added that everything was normal they tested in her blood work and everything else. The patient had her seizure on Sunday 11July2021, and they rushed her to the emergency room at 10:00AM. She says her daughter was asleep when it happened, and the seizure lasted about a minute. She says it was given to us by the emergency room that it was a tonic clonic seizure. She says for treatment they did blood work and kept her daughter for observation because she was very confused. She says that they gave her daughter no medications, and she ended following up the next day with the pediatrician, because it happened they followed up Monday with the pediatrician, and they have an appointment with a neurologist 18Aug2021 for a CT scan and EEG. She says all of her patient's blood work came back normal. The patient had no other vaccinations recently and had started no new medications, she only started taking about a month and a half ago vitamin C, just over the counter from and only took it one time a day and she took it 3 weeks, that was it. The reporter added that the has had no previous reactions to vaccinations. The reporter also stated that the patient has kind of recovered, she hasn't had any, she has been checking on her and checks on her at night when she sleeps since it happened when she was sleeping. She says she is fine, they are following up to see what triggered it. The reporter also says that they went home that day they went to the emergency room and they were at the hospital for 3 hours and didn't stay overnight. The reporter added that they got the lab results in today, the office has the blood work results already, but she doesn't have them. The reporter then asked, if after they see the neurologist in August if they need to call back with neurologist information, and results from CT scan, or if they will get back to her to follow up on this? It was added that the Seizure lasting about one minute. Time of Onset was 10:00, 11Jul2021. The Seizure require a visit to: Emergency Room and Physician Office Visit. The patient was not hospitalized. The outcome of the events was recovered.