Blood pressure would drop and then go back up; feeling passed; he is not thinking well; he is not talking as clear or loud; sick; Very hot, flushed; Everything started spinning; Headache; Mind not clear/It is like he is kind of in a fog. It is not clear; Not being as focused with is eyes; Breathing difficulty/breathing harder; This is a spontaneous report from a contactable consumer (patient). A 74-year-old male patient received the second dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, lot/batch number: EL9262 and expiry date: 21May2021) solution for injection, via an unspecified route of administration in arm on 17Feb2021 15:00 at a single dose for Covid-19 immunization. Medical history included muscle relaxer/pain therapy, accident at work (stated he taught college for many years. However, he was in (enforcement type) for the office of (County Name). He worked as an admin assistant for the state attorney. He was injured on the job because someone did not like him. He was injured real bad and taking these medications for pain. Concomitant medications included ongoing gabapentin (NEURONTIN) for pain, oxycodone hydrochloride, oxycodone terephthalate, paracetamol (PERCOCET [OXYCODONE HYDROCHLORIDE;OXYCODONE TEREPHTHALATE;PARACETAMOL]) for pain, ongoing tizanidine (TIZANIDINE) as muscle relaxer/for pain, and unspecified medications for pain. The first dose was administered on 27Jan2021 (Lot Number: EL1283, Expiry Date: 30Apr2021), in Left arm. The patient reported breathing difficulty/breathing harder, mind not clear/it was like he was kind of in a fog. It was not clear, not being as focused with his eyes, all on 18Feb2021. On 19Feb2021, the patient reported his blood pressure would drop and then go back up, very hot, flushed, everything started spinning, and had headache and was sick. The patient reported feeling passed, he was not thinking well, he was not talking as clear or loud on an unspecified date. On Friday around 1'clock he got very hot, flushed. He took off his shirt. He was washing dishes. He needed to cool down a bit. He went to the bathroom to shave and brush his teeth. However, things were getting out of focus. He sat down on the toilet for about 3-4 minutes and then the feeling passed. He got back up and walked into the family room. He made it in there and had to sit down. All of a sudden he felt like everything was started to spin. Everything was really spinning. He was standing and had to sit down for a few minutes. While sitting he felt all of a sudden a super wave of feeling bad. He was sick. Everything was spinning. He could not stand it for another minute. The patient was hospitalized from 19Feb2021 to 21Feb2021 due to blood pressure would drop and then go back up. The fire department came and one of the things they did was check his blood pressure. Initially stated it was low and then it jumped up 20points when he stood up. They then threw him in the ambulance to take to the ER. He was going to the hospital because they thought he was having a stroke. He was seen by two different neurologist and other hospital doctors. The patient underwent lab tests and procedures which included blood pressure abnormal: it was low and then it jumped up 20points (Initially stated it was low and then it jumped up 20points when he stood up), blood pressure abnormal: believes it was like 140 was the high (he was unable to provide a true blood pressure reading at the time event occurred. Stated he was messed up in the head. He believes it was like 140 was the high. His was usually lower than that to begin with. Then it would go to 110. It would bounce from 110 to 140. It would change from sitting to standing), chest X-ray and electrocardiogram: test came back negative (He was in the ER and had a Chest -X Ray. He had an electrocardiogram, EKG, he had a scan that was dry without contrast and second one with contrast/iodine. He had an MRI of the brain to check for brain bleed. They thought he was in the process of having a stroke. They could not find anything. He had two CTs. Test came back negative. Neurologist determined it was not a stroke. Decided it must be inner ear situation), computerised tomogram: test came back negative (he was in the ER and had a Chest -X Ray. He had an electrocardiogram , EKG, he had a scan that was dry without contrast and second one with contrast/iodine. He had an MRI of the brain to check for brain bleed. They thought he was in the process of having a stroke. They could not find anything. He had two CTs. Test came back negative. Neurologist determined it was not a stroke. Decided it must be inner ear situation); test done on his heart, MRI of the brain, and two different scans: everything was negative (he had all kinds of test done on his heart, two different scans, MRI of the brain to see if had a brain bleed all that stuff. He was in the hospital for three days. Yesterday he was sent home. They found nothing wrong. Everything was negative. Therefore, he was sent home. Outcome of the event Blood pressure would drop and then go back up, Breathing difficulty/breathing harder, Mind not clear/It is like he is kind of in a fog/It was not clear was recovering; everything started spinning was recovered 20Feb2021; not being as focused with his eyes, feeling passed, he was not thinking well, he was not talking as clear or loud, and sick was unknown; headache was not recovered.  No follow-up activities are needed. No further information is expected. Information about lot/batch number has been obtained.