passed out; told the pharmacist and I that he was feeling like something was happening; eyes were rolling in the back of his head; twitching; very fatigued; neausea; headache; feeling hot; This is a spontaneous report received from a contactable reporter (Consumer). The reporter is the parent.  A 16 year-old male patient received BNT162B2 (BNT162B2), administered in arm left, administration date 14Feb2022 12:15 (Lot number: FM0697) at the age of 16 years as dose 3 (booster), single for covid-19 immunisation. Relevant medical history included: "Asthma" (unspecified if ongoing); "Sinusitis" (unspecified if ongoing). Concomitant medication(s) included: ADVAIR. Past drug history included: Augmentin, reaction(s): "Known allergies: Augmentin". There was no other vaccine received in four weeks. The patient did not have COVID-19 before vaccination. Vaccination history included: BNT162B2 (DOSE 2, Batch/Lot No: EW0179, Location of injection: Arm Left, Vaccine Administration Time: 12:30 PM), administration date: 28Jul2021, when the patient was 16 years old, for COVID-19 immunization; BNT162B2 (DOSE 1, Batch/Lot No: EM0179, Location of injection: Arm Left, Vaccine Administration Time: 01:30 PM), administration date: 08Jul2021, when the patient was 15 years old, for COVID-19 immunization, reaction(s): "passed out". The following information was reported: LOSS OF CONSCIOUSNESS (medically significant) with onset 14Feb2022 12:30, outcome "recovering", described as "passed out"; FEELING ABNORMAL (non-serious) with onset 14Feb2022 12:30, outcome "recovering", described as "told the pharmacist and I that he was feeling like something was happening"; EYE MOVEMENT DISORDER (non-serious) with onset 14Feb2022 12:30, outcome "recovering", described as "eyes were rolling in the back of his head"; MUSCLE TWITCHING (non-serious) with onset 14Feb2022 12:30, outcome "recovering", described as "twitching"; FATIGUE (non-serious) with onset 14Feb2022 12:30, outcome "recovering", described as "very fatigued"; NAUSEA (non-serious) with onset 14Feb2022 12:30, outcome "recovering", described as "neausea"; HEADACHE (non-serious) with onset 14Feb2022 12:30, outcome "recovering", described as "headache"; FEELING HOT (non-serious) with onset 14Feb2022 12:30, outcome "recovering", described as "feeling hot". Therapeutic measures were taken as a result of loss of consciousness, feeling abnormal, eye movement disorder, muscle twitching, fatigue, nausea, headache, feeling hot. The clinical course was reported as follows: : The patient passed out after 3-5 minutes after receiving his booster shot. He was in a seated position, and he told the pharmacist and his parent that he was feeling like something was happening, and within a few seconds his eyes were rolling in the back of his head and was twitching. They called AMR, who came and checked him out. He came to after several minutes. The parent did not have him transported for further testing as he passed out after the first COVID vaccination (reporter didn't know to report it the first time). He did fine with the second COVID vaccine he received. The past several days he has been very fatigued, some nausea, headache, and feeling hot. At the time of reporting, patient still experiencing some fatigue, but better than yesterday. The patient has not been tested for COVID-19 after vaccination.  Follow-up attempts are completed. No further information is expected.; Sender's Comments: Linked Report(s) : US-PFIZER INC-202200282935 Same reporter/SD, Different potential/AE