severe grand mal seizures; he only has half of his memory; some of his levels were high last week in his bloodwork; This is a spontaneous report from a contactable consumer (patient's wife). A 67-year-old male patient received the second dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, lot number: ER8730 and expiration date not provided) via an unspecified route of administration, administered in left arm on 30Mar2021 13:10 as a single dose for COVID-19 immunisation. Medical history included ongoing hypothyroid which he have had for 15 years. Concomitant medication included ongoing levothyroxine for hypothyroid which he had been taking for too long to remember, over 10 years. The patient took the first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, lot number: EN6206) in the left arm on 08Mar2021 for COVID-19 immunization. The patient did not receive any other vaccine within 4 weeks prior to the COVID vaccine. The reporter (patient's wife) called about the Pfizer vaccine for COVID 19. She called to report that her husband almost within 24 hours after receiving his second vaccine, he a had severe grand mal seizure and had to be hospitalized from 31Mar2021 to 02Apr2021. She confirmed that he have had severe grand mal seizures on 31Mar2021. She said that he did not regain conciousness afterwards and that this was within 24 hours after receiving the 2nd vaccination. When probed for end date, the reporter stated that they could not find anything wrong with him. She said he only has half of his memory on an unspecified date. There was a lasting memory effect. He is on seizure medications, he is not allowed to drive for 1 month because he had the seizure, he has a zoom call meeting with his doctor on 19Apr2021. She says not driving is a problem, he is trying to work from home. She said upper arm for shot location then consulted her husband in the background who said both shots were in his left arm. She said he takes low dose thyroid medication. She consulted her husband in the background for some information. After giving some information she says no he doesn't take anything else. He is never sick and he's never ever been hospitalized. This is his first time ever. She said her son says when the body gets into that condition, it enters fight-or-flight, he went into fight, 5 firefighters had to hold him so they could give him the calm-you-down medications in the ambulance. One was his son, he said that he had the power of 10 men. She said her husband doesn't remember any of it. She says he is very healthy. For investigation, she said, well everything turned out negative. She says he had a CT scan, MRI, EEG, bloodwork, urinalysis on an unspecified date in 2021 and they can't find anything wrong. She said that they just said everything was normal. She said some of his levels were high last week, on an unspecified date in 2021 in his bloodwork and his doctor wanted him to do bloodwork again in 3 weeks. She said several things were high. The events required a visit to emergency room. She said that the fire department took him. She did not visit the physician office until after he got out of the hospital where he saw his primary doctor. She said she wanted to include on the report that it scared the crap out of her. She said, she was holding his neck up and tilting his head up to make sure he was getting air. She wanted to let everyone know what happened. The outcome of the event Grand mal seizure was recovered with sequelae on an unspecified date while the outcome of the rest of the events was unknown.