her friend's mom is a nurse and thought maybe it was a TIA; disoriented; confused/ confusion; This spontaneous report from a contactable consumer (consumer called-in on-behalf of her grandfather) via Pfizer-sponsored program.   A 93-year-old male patient received first dose of BNT162b2 (PFIZER-BIONTECH COVID-19 VACCINE, solution for injection, Batch/Lot Number, EL9266), via an unspecified route, at injection once to left deltoid on 12Feb2021 (age at vaccination was 93-old-year) (got dose around 2, his appointment was 2:30) as dose 1, single for COVID-19 immunisation. The patient medical history was included heart attack in last year around June, and had stent placement, so a bit of medical history last year, but the cardiologist said his last checkup was perfect, he was a perfect candidate for vaccine, he had a nuclear stress test and everything was fine, she was unsure of bloodwork, but assumes it was done at the cardiologist's, and nothing came up that they were concerned about. The patient concomitant medications were not reported. The reporter stated that, the patient was doing great since, but had one episode that night, 7.5-8 hours (episode was around 21:30), after he received the dose, he had a brief episode of confusion. States he has been confused in the past, briefly, but this was weird, they play cards every weekend, this exact game they play every weekend, and he had no idea how to play, her mother explained what they were doing, and he was still confused, he knew who he was, he realized the people who weren't there, so he was alert to himself and where he was, but the rules of the game he couldn't process, and in 5 minutes he was ok, he knew the game, won the game. reporter was unsure if he was sleeping before they asked him to play, and he was a little foggy, but she doesn't know, one of her friend's mom was a nurse and thought maybe it was a TIA, and reporter was freaking out now. Caller is a physical therapist, so has background, basic knowledge of things. Reporter reached out to his cardiologist and hasn't heard back, so was reporter today, as she kind of wants to know, can he get the second dose, she doesn't know what to do? States her anxiety was through the roof, she knew this wasn't normal, and was pushing her mom to call over the weekend, caller states she should have done something sooner, he was perfect, he was outside chopping icy snow the day after, he had no fever, no injection site soreness, he was perfect, if they didn't play cards, she probably wouldn't know he had the episode. At 23:30, he asked what was that, he remembered he was confused and asked why it happened; they didn't bring it up, he asked what was that. She told him if he felt confused to tell one of them, he could call her, to know if it happens again, and he laughed and said he felt fine. Reporter stated he has been doing great, except one brief episode of confusion on Friday night and was fine 5 minutes afterwards. Since then he has been fine. She stated it was probably a coincidence or brain fog and they just caught it. He has been fine and did not even have injection site soreness. She stated they reached out to his cardiologist and are still waiting to hear back so she wanted to check with us regarding whether he should receive the second dose of the vaccine. She stated she read about potential allergic reactions but stated the confusion was 7 and a half to 8 hours after the vaccine. At the time of this report event outcome of TIA was unknown and other event outcome was recovered on 12Feb2021.   Follow-up attempts are completed. No further information is expected.