Whole trunk, from belly to top of the chest was hurting really bad/ aches and pains are less but still there today/ I thought the shot was going to kill me; Shooting pains in chest and down my back; shooting pains in chest and down my back; Stomach felt bloated like a balloon, like if I pricked my stomach with a pin, I could fly away; Never experienced anything like this in my life; Couldn't do anything; Couldn't lay down or sit; I also vomited; Had a really bad reaction; Slept most of the day; This spontaneous case was reported by a consumer and describes the occurrence of ADVERSE EVENT (Had a really bad reaction), HYPERSOMNIA (Slept most of the day), PAIN (Whole trunk, from belly to top of the chest was hurting really bad/ aches and pains are less but still there today/ I thought the shot was going to kill me), CHEST PAIN (Shooting pains in chest and down my back) and BACK PAIN (shooting pains in chest and down my back) in a 63-year-old male patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 025A21A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     Concomitant products included CELECOXIB (CELEXA [CELECOXIB]), MEMANTINE HYDROCHLORIDE (NAMENDA), VITAMIN D NOS and CLONAZEPAM (KLONOPIN) for an unknown indication.    On 26-Feb-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 26-Feb-2021, the patient experienced ADVERSE EVENT (Had a really bad reaction) and HYPERSOMNIA (Slept most of the day). On 27-Feb-2021, the patient experienced PAIN (Whole trunk, from belly to top of the chest was hurting really bad/ aches and pains are less but still there today/ I thought the shot was going to kill me), CHEST PAIN (Shooting pains in chest and down my back), BACK PAIN (shooting pains in chest and down my back), ABDOMINAL DISTENSION (Stomach felt bloated like a balloon, like if I pricked my stomach with a pin, I could fly away), FEELING ABNORMAL (Never experienced anything like this in my life), ASTHENIA (Couldn't do anything), ILLNESS (Couldn't lay down or sit) and VOMITING (I also vomited). The patient was treated with PARACETAMOL (TYLENOL) for Pain, at a dose of 1 dosage form. At the time of the report, ADVERSE EVENT (Had a really bad reaction), HYPERSOMNIA (Slept most of the day), PAIN (Whole trunk, from belly to top of the chest was hurting really bad/ aches and pains are less but still there today/ I thought the shot was going to kill me), CHEST PAIN (Shooting pains in chest and down my back), BACK PAIN (shooting pains in chest and down my back), ABDOMINAL DISTENSION (Stomach felt bloated like a balloon, like if I pricked my stomach with a pin, I could fly away), FEELING ABNORMAL (Never experienced anything like this in my life), ASTHENIA (Couldn't do anything), ILLNESS (Couldn't lay down or sit) and VOMITING (I also vomited) had resolved.        The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) was unknown.   For mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular), the reporter did not provide any causality assessments.   Most recent FOLLOW-UP information incorporated above includes: On 16-Jul-2021: Follow-up received on 16-Jul-2021 contains significant information. The event outcome was updated from unknown to recovered / resolved.