Seizures; throat swelled up; Troponin level increased; Mild heart attack; arm was hurting; breathing issues; Dry heaves; Mucus to come out; Nauseous; Dizzy; Headache; Ears became hypersensitive; Senses heightened; Throwed up; This is a spontaneous report from a contactable other health professional (patient). A 65-year-old female patient received the 1st dose of bnt162b2 (BNT162B2, Manufacturer Pfizer-BioNTech), via an unspecified route of administration in arm left, on 27Feb2021 (lot# EN6205), as 0.3 ml single, for COVID-19 immunisation. Medical history included seizure from 2017 (she hasn't had a seizure in 8 months), allergy (to a lot of things). Concomitant medications were not reported. The patient did not have other vaccinations in 4 weeks prior. Within 15 minutes from having the vaccination at the center the patient experienced the first seizure that lasted about an hour. The seizure was really bad, she had breathing issues, dry heaving like she was trying to throw up, mucus to come out. The paramedics checked her out, they stayed around until she came out of the seizure. The patient went home and then at 07:50 PM she started heavy shallow breathing, was nauseous, dizzy, had a headache, which also happened at the center. Ears became hypersensitive, it was so noisy like loud, but her husband and the paramedics said it wasn't loud but she could hear it, all of her senses were heightened. She had a second seizure and didn't known how long it lasted. Patient had another seizure at 08:25 PM, at 08:40 PM she had another one, at 09:00 PM patient was coming back around and had another seizure and her throat closed up and that's when she went to the hospital, when her throat started to close up. While the patient was in the emergency room (ER) she had another seizure, she had 6 total seizures, she has never had this many before so she knows it was an adverse event to this vaccination. The seizures also increased the patient's heart enzymes- troponin levels. The patient has an EEG, was given 4 baby chewable Aspirin, as she had a mild heart attack. She thought the seizure increased her troponin. The patient  mentioned that during the first event at the center, she was so into the seizures, she remembers grabbing her left shoulder, her arm was hurting. She was so into the seizure and trying to throwing up that it didn't dawn on her. The hospital didn't tell her she had a mild heart attack, it just dawned on her because her troponin levels were up mildly and she thought the seizures were triggering something in her heart, not just her seizures. The patient got another headache and was dizzy and had shallowing breathing. Seizures recovered on 28Feb2021. The patient underwent lab tests and procedures which included chest x-ray: normal, it didn't show pneumonia or fluid on the lungs on 27Feb2021, electrocardiogram (EKG): normal on unspecified date, electroencephalogram (EEG): normal on 27Feb2021, troponin: increased on 27Feb2021.  Follow-up attempts are completed. No further information is expected.; Sender's Comments: A possible contributory effect of suspect BNT162B2 on reported events cannot be excluded.  The impact of this report on the benefit/risk profile of the Pfizer product is evaluated as part of Pfizer procedures for safety evaluation, including the review and analysis of aggregate data for adverse events. Any safety concern identified as part of this review, as well as any appropriate action in response, will be promptly notified to regulatory authorities, Ethics Committees, and Investigators, as appropriate.