First Dose: Throwing up a Bit; First Dose: Headache; First Dose: Really Bad Mood Swings; First Dose: Lost Consciousness; First Dose: fell backwards at hit his head on concrete floor; First Dose: Head Injury; First Dose: Lightheadedness / First Dose: Dizziness; This is a spontaneous report received from a contactable reporter(s) (Lawyer).  A 30 year-old male patient received bnt162b2 (BNT162B2), administration date 28Aug2021 12:00 (Batch/Lot number: Unknown) at the age of 30 years as dose 1, single for covid-19 immunisation. The patient had no relevant medical history. There were no concomitant medications. The following information was reported: LOSS OF CONSCIOUSNESS (medically significant) with onset 28Aug2021, outcome "recovered" (28Aug2021), described as "First Dose: Lost Consciousness"; FALL (non-serious) with onset 28Aug2021, outcome "unknown", described as "First Dose: fell backwards at hit his head on concrete floor"; HEAD INJURY (non-serious) with onset 28Aug2021, outcome "unknown", described as "First Dose: Head Injury"; DIZZINESS (non-serious) with onset 28Aug2021, outcome "unknown", described as "First Dose: Lightheadedness / First Dose: Dizziness"; VOMITING (non-serious), outcome "recovered", described as "First Dose: Throwing up a Bit"; HEADACHE (non-serious), outcome "unknown", described as "First Dose: Headache"; MOOD SWINGS (non-serious), outcome "unknown", described as "First Dose: Really Bad Mood Swings". The events "first dose: lost consciousness", "first dose: fell backwards at hit his head on concrete floor", "first dose: head injury", "first dose: lightheadedness / first dose: dizziness", "first dose: throwing up a bit", "first dose: headache" and "first dose: really bad mood swings" were evaluated at the physician office visit. Therapeutic measures were taken as a result of head injury. Additional information: The patient visited urgent care. Prior Vaccinations (within 4 weeks) was none. AE(s) following prior vaccinations was none. Family medical history relevant to AE(s) was none. Patient's medical history (including any illness at time of vaccination) was none. Relevant Tests was none. Caller clarifies the original incident was on 28Aug2021, and the patient went to urgent care on 01Sep2021. Investigation assessment was none. Caller states he is calling from a Law Firm and they are representing a client that received their Pfizer Covid Vaccine at (City name). Caller states he is a Paralegal working for a law firm, and he is calling on behalf of the lawyer. Caller asking who to contact about legal matters. Caller states the patient was not under observation and he fell backwards and hit his head on the concrete floor. Caller states they were filing a claim against withheld, but withheld is saying it is an issue against Pfizer since they are the manufacturer of the vaccine. Caller states withheld is trying to blame Pfizer. Caller states his client went to withheld, and after his wife and him got the vaccine, the Pharmacist left them unsupervised, and he starting moving around, and not even after 10 minutes, the patient got lightheaded, lost consciousness and hit his head on the concrete floor. Treatment: Caller states the patient woke up 2-3 minutes after he lost consciousness. Caller states the patient didn't seek immediate treatment, but he went to his primary doctor at (withheld) and he has been doing continuing treatment for the head injury. Caller states the patient is also seeing a Neurologist and doing testing. Caller states the patient did receive their second dose of the vaccine through their Primary Care doctor at a withheld, but the date is unknown, probably between then and Oct. Caller states his client was embarrassed after falling and he didn't seek care right away. Caller reports after the fall, the patient was throwing up a bit and he noticed he was having really bad mood swings and headache so he went to his primary care doctor. Caller states a few days after the incident he noticed those and he made an appointment with his primary doctor a week later. The lot number for bnt162b2 was not provided and will be requested during follow up.