I passed out and then I hit my head on floor and chin; Hit my head on floor and chin; I hurt my neck and put neck braces on me in hospital; My wife jumped up and came to me and put me up on floor and heard gargling noise; I have 2 provoked seizures from Moderna shot; Doctors found every thing normal in result except sinus; I woke up with slight headache; This spontaneous case was reported by a consumer (subsequently medically confirmed) and describes the occurrence of LOSS OF CONSCIOUSNESS (I passed out and then I hit my head on floor and chin), HEAD INJURY (Hit my head on floor and chin), NECK INJURY (I hurt my neck and put neck braces on me in hospital), GASTROINTESTINAL SOUNDS ABNORMAL (My wife jumped up and came to me and put me up on floor and heard gargling noise) and SEIZURE (I have 2 provoked seizures from Moderna shot) in a 28-year-old male patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch nos. 043B21A and 040A21A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     No Medical History information was reported.   On 24-Mar-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 23-Apr-2021 at 5:30 PM, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) dosage was changed to 1 dosage form. On 24-Apr-2021, the patient experienced LOSS OF CONSCIOUSNESS (I passed out and then I hit my head on floor and chin) (seriousness criteria hospitalization and medically significant), HEAD INJURY (Hit my head on floor and chin) (seriousness criterion hospitalization), NECK INJURY (I hurt my neck and put neck braces on me in hospital) (seriousness criterion hospitalization), GASTROINTESTINAL SOUNDS ABNORMAL (My wife jumped up and came to me and put me up on floor and heard gargling noise) (seriousness criterion hospitalization) and HEADACHE (I woke up with slight headache). On an unknown date, the patient experienced SEIZURE (I have 2 provoked seizures from Moderna shot) (seriousness criterion medically significant) and SINUS DISORDER (Doctors found every thing normal in result except sinus). The patient was hospitalized on 24-Apr-2021 due to GASTROINTESTINAL SOUNDS ABNORMAL, HEAD INJURY, LOSS OF CONSCIOUSNESS and NECK INJURY. At the time of the report, LOSS OF CONSCIOUSNESS (I passed out and then I hit my head on floor and chin), HEAD INJURY (Hit my head on floor and chin), NECK INJURY (I hurt my neck and put neck braces on me in hospital), GASTROINTESTINAL SOUNDS ABNORMAL (My wife jumped up and came to me and put me up on floor and heard gargling noise), SEIZURE (I have 2 provoked seizures from Moderna shot), SINUS DISORDER (Doctors found every thing normal in result except sinus) and HEADACHE (I woke up with slight headache) outcome was unknown.            Concomitant medication use was not reported. It was reported that the patient was not taking any medication on regular basis.  The patient reported that they did bunch of tests like CAT scan, EEG test, they monitor my heart for 30 days. Results were not reported. For treatment the patient reported they gave him IV and seizure medication which he was not taking right now.  Based on the current available information and temporal association between the use of the product and the start date of the events, a causal relationship cannot be excluded.; Sender's Comments: Based on the current available information and temporal association between the use of the product and the start date of the events, a causal relationship cannot be excluded.