he had a stroke; heart failure; had basilar artery dissection; She decided since one dose was so strong that COVID would kill him.; her husband couldn't walk up stairs; brain function issues; failure in his vision; received the Pfizer-BioNTech Covid 19 Vaccine and after that he started to feel sick; He has lost a significant amount of weight since this too. When it started, he weight 210 lbs, and he lost weight quickly. Now he ways 205 lbs.; He began to become severely hypotensive.; he came home and felt high; dizziness; passed out; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP) from medical information team.  A 62-year-old male patient received BNT162b2 (COMIRNATY), Solution for injection, on 05Apr2021 as dose 1, single (Batch/Lot number: unknown) at the age of 62 years for covid-19 immunisation. The patient's relevant medical history included: "type 2 diabetes", start date: 2012 (ongoing), notes: He is a Type 2 diabetic. He was diagnosed with the 10 years ago. There were no concomitant medications. The following information was reported: LOSS OF CONSCIOUSNESS (medically significant) with onset 05Apr2021, outcome "unknown", described as "passed out"; DRUG INTOLERANCE (life threatening), outcome "unknown", described as "She decided since one dose was so strong that COVID would kill him."; CEREBROVASCULAR ACCIDENT (hospitalization, medically significant), outcome "unknown", described as "he had a stroke"; CARDIAC FAILURE (hospitalization, medically significant), outcome "unknown", described as "heart failure"; CEREBRAL DISORDER (medically significant), outcome "unknown", described as "brain function issues"; VISUAL IMPAIRMENT (medically significant), outcome "unknown", described as "failure in his vision"; ARTERY DISSECTION (hospitalization, medically significant) with onset 05Apr2021, outcome "unknown", described as "had basilar artery dissection"; HYPOTENSION (non-serious) with onset 05Apr2021, outcome "unknown", described as "He began to become severely hypotensive."; DIZZINESS (non-serious) with onset 05Apr2021, outcome "unknown"; FEELING ABNORMAL (non-serious) with onset 05Apr2021, outcome "unknown", described as "he came home and felt high"; MALAISE (non-serious), outcome "unknown", described as "received the Pfizer-BioNTech Covid 19 Vaccine and after that he started to feel sick"; WEIGHT DECREASED (non-serious), outcome "unknown", described as "He has lost a significant amount of weight since this too. When it started, he weight 210 lbs, and he lost weight quickly. Now he ways 205 lbs."; GAIT DISTURBANCE (non-serious), outcome "unknown", described as "her husband couldn't walk up stairs". The patient was hospitalized for artery dissection, cerebrovascular accident, cardiac failure (start date: 20Apr2021). The events "she decided since one dose was so strong that covid would kill him.", "had basilar artery dissection", "he had a stroke", "heart failure", "brain function issues", "failure in his vision", "passed out", "received the pfizer-biontech covid 19 vaccine and after that he started to feel sick", "he has lost a significant amount of weight since this too. when it started, he weight 210 lbs, and he lost weight quickly. now he ways 205 lbs.", "he began to become severely hypotensive.", "he came home and felt high", "dizziness" and "her husband couldn't walk up stairs" required physician office visit. The patient underwent the following laboratory tests and procedures: Computerised tomogram: basilar artery dissection; Weight: 210 lbs, notes: Now he ways 205 lbs; lost a significant amount of weight, notes: He has lost a significant amount of weight since this too. Therapeutic measures were taken as a result of artery dissection, cerebrovascular accident, cardiac failure, cerebral disorder.  Clinical course: At the time they didn't know it was basilar artery dissection . Then, he had a stroke, and vision loss on the 3rd or 4th day. He went to one doctor, and at that point, her husband couldn't walk up stairs. Then, his heart started to fail .He went to the doctors at least 3 times, and they kept saying they knew something was wrong. Medicine there is crazy. She did not know the exact dates of his hospitalizations or vaccines at this time. She kept calling because she knew her husband was sick, and they were having issues with insurance. He needed a CT scan. He was told to go to urgent care or the emergency room, but they hadn't put the order in for the hospital. On the 20Apr2021, she took him to the hospital herself, and the hospital kept him. He has lost a significant amount of weight since this too. When it started, he weight 210 lbs, and he lost weight quickly. Now he ways 205 lbs. They discovered his basilar artery dissection by doing the CAT scans. He was hospitalized numerous times. His first hospitalization was 20Apr2021 at (withheld). He has had several procedures done since, and neurosurgery the first day. They had to take care of his brain before his heart. He went back for cardiothoracic procedures following that. He visited doctor's in between. He saw a doctor at (withheld), (doctor name withheld).  The information on the batch/lot number for BNT162b2 has been requested and will be submitted if and when received.