Four days of shock; The first two nights he became delirious and was arguing with himself; drenched the bed with sweat; His body shunted during this time, causing 104 Fahrenheit despite Tylenol and Ibuprofen; lost 15 lbs in 4 days; incredible heart burn; his joints hurt for about a week; This is a spontaneous report received from a contactable reporter(s) (Other HCP). The reporter is the patient.  A 43 year-old male patient received bnt162b2 (BNT162B2), administered in arm right, administration date 19Nov2021 10:00 (Lot number: FF2593) at the age of 43 years as dose 1, single and (Batch/Lot number: unknown) as dose 2, single for covid-19 immunisation. Relevant medical history included: "Covid" (unspecified if ongoing), notes: prior vaccination; "fatigue" (unspecified if ongoing). No known allergies. The patient worked in an Emergency room and had COVID twice causing fatigue for approximately 12 hours each time. There were no concomitant medications. No other vaccine in four weeks. No other medications in two weeks. The following information was reported: SHOCK (medically significant, life threatening) with onset 20Nov2021 02:00, outcome "recovering", described as "Four days of shock"; DELIRIUM (medically significant, life threatening) with onset 20Nov2021 02:00, outcome "recovering", described as "The first two nights he became delirious and was arguing with himself"; HYPERHIDROSIS (life threatening) with onset 20Nov2021 02:00, outcome "recovering", described as "drenched the bed with sweat"; PYREXIA (life threatening) with onset 20Nov2021 02:00, outcome "recovering", described as "His body shunted during this time, causing 104 Fahrenheit despite Tylenol and Ibuprofen"; WEIGHT DECREASED (life threatening) with onset 20Nov2021 02:00, outcome "recovering", described as "lost 15 lbs in 4 days"; DYSPEPSIA (life threatening) with onset 20Nov2021 02:00, outcome "recovering", described as "incredible heart burn"; ARTHRALGIA (life threatening) with onset 20Nov2021 02:00, outcome "recovering", described as "his joints hurt for about a week". With this vaccine, he was unable to physically get out of bed for 4 days. The patient was forced into taking the second Pfizer vaccine or lose his job and had the same reaction as the first. No covid tested post vaccination. It's unbelievable that this was a forced vaccine that many had not wanted but had been forced to take. Please come up with a vaccine that doesn't nearly kill those that have been on the front line and have created natural immunity. The patient underwent the following laboratory tests and procedures: body temperature: 104 Fahrenheit. Therapeutic measures were not taken as a result of shock, delirium, hyperhidrosis, weight decreased, dyspepsia, arthralgia. Therapeutic measures were taken as a result of pyrexia. The lot number for bnt162b2 was not provided and will be requested during follow up.; Sender's Comments: Based on the available information in the case provided, the causal association between the events Shock, Delirium, Hyperhidrosis, Pyrexia, Weight decreased, Dyspepsia, Arthralgia and the suspect drug BNT162B2 cannot be excluded considering plausible drug-event temporal association. The case will be reassessed once new information is available. 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.