Migraine; Uncontrollable diarrhea; Vomiting; Muscle spasms; Muscle pain and cramps; Chills; Fatigue; Profuse sweating; Flush; Brain fog; Rash; Swelling of face; Loss of consciousness; Trouble breathing; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 32-year-old female patient (not pregnant) received BNT162b2 (BNT162B2), on 05Apr2022 at 10:00 as dose 3 (booster), single (Lot number: FP4554) at the age of 31 years, in left arm for covid-19 immunisation. The patient's relevant medical history included: "Thyroidectomy" (not ongoing), notes: Thyroidectomy due to thyroid cancer; "Thyroid cancer" (unspecified if ongoing). Concomitant medication(s) included: FLU VACCINE VII taken for influenza immunisation, on 21Mar2022 as single; LEVOTHYROXINE. Vaccination history included: BNT162b2 (DOSE 2, SINGLE, lot number: ew0217, administration time: 12:00 PM, vaccine location: Left arm), administration date: 13Jul2021, when the patient was 31-year-old, for COVID-19 immunization; BNT162b2 (DOSE 1, SINGLE, lot number: ew0217, administration time: 12:00 PM, vaccine location: Left arm), administration date: 20Jun2021, when the patient was 31-year-old, for COVID-19 immunization. The following information was reported: FEELING ABNORMAL (hospitalization, life threatening) with onset 05Apr2022 at 13:00, outcome "recovered with sequelae" (2022), described as "Brain fog"; CHILLS (hospitalization, life threatening) with onset 05Apr2022 at 13:00, outcome "recovered with sequelae" (2022); FATIGUE (hospitalization, life threatening) with onset 05Apr2022 at 13:00, outcome "recovered with sequelae" (2022); FLUSHING (hospitalization, life threatening) with onset 05Apr2022 at 13:00, outcome "recovered with sequelae" (2022), described as "Flush"; LOSS OF CONSCIOUSNESS (hospitalization, life threatening) with onset 05Apr2022 at 13:00, outcome "recovered with sequelae" (2022); MIGRAINE (hospitalization, life threatening) with onset 05Apr2022 at 13:00, outcome "recovered with sequelae" (2022); MYALGIA (hospitalization, life threatening) with onset 05Apr2022 at 13:00, outcome "recovered with sequelae" (2022), described as "Muscle pain and cramps"; MUSCLE SPASMS (hospitalization, life threatening) with onset 05Apr2022 at 13:00, outcome "recovered with sequelae" (2022); HYPERHIDROSIS (hospitalization, life threatening) with onset 05Apr2022 at 13:00, outcome "recovered with sequelae" (2022), described as "Profuse sweating"; RASH (hospitalization, life threatening) with onset 05Apr2022 at 13:00, outcome "recovered with sequelae" (2022); SWELLING FACE (hospitalization, life threatening) with onset 05Apr2022 at 13:00, outcome "recovered with sequelae" (2022), described as "Swelling of face"; DYSPNOEA (hospitalization, life threatening) with onset 05Apr2022 at 13:00, outcome "recovered with sequelae" (2022), described as "Trouble breathing"; DIARRHOEA (hospitalization, life threatening) with onset 05Apr2022 at 13:00, outcome "recovered with sequelae" (2022), described as "Uncontrollable diarrhea"; VOMITING (hospitalization, life threatening) with onset 05Apr2022 at 13:00, outcome "recovered with sequelae" (2022). The patient was hospitalized for migraine, diarrhoea, vomiting, muscle spasms, myalgia, chills, fatigue, hyperhidrosis, flushing, feeling abnormal, rash, swelling face, loss of consciousness, dyspnoea (hospitalization duration: 3 day(s)). The events "migraine", "uncontrollable diarrhea", "vomiting", "muscle spasms", "muscle pain and cramps", "chills", "fatigue", "profuse sweating", "flush", "brain fog", "rash", "swelling of face", "loss of consciousness" and "trouble breathing" required physician office visit and emergency room visit. It was unknown if therapeutic measures were taken as a result of migraine, diarrhoea, vomiting, muscle spasms, myalgia, chills, fatigue, hyperhidrosis, flushing, feeling abnormal, rash, swelling face, loss of consciousness, dyspnoea. The patient has no covid prior to vaccination. The patient was not tested for covid post vaccination. The patient has no known allergies.