Feeling extremely hungry like if I didn't eat anything; Heart beat got faster; Felt hot and cold; Felt pressure in my head; Feel dehydrated; Feel extremely weak; Problems breathing; Indescribable headache; Chills; My whole body ached; Feeling I was going to throw up or pass out; Nausea; This spontaneous case was reported by a consumer and describes the occurrence of HUNGER (Feeling extremely hungry like if I didn't eat anything), PALPITATIONS (Heart beat got faster), FEELING OF BODY TEMPERATURE CHANGE (Felt hot and cold), HEAD DISCOMFORT (Felt pressure in my head) and DEHYDRATION (Feel dehydrated) in a 37-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 020B21A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     No Medical History information was reported.    On 14-Apr-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On 15-Apr-2021, the patient experienced HUNGER (Feeling extremely hungry like if I didn't eat anything), PALPITATIONS (Heart beat got faster), FEELING OF BODY TEMPERATURE CHANGE (Felt hot and cold), HEAD DISCOMFORT (Felt pressure in my head), DEHYDRATION (Feel dehydrated), ASTHENIA (Feel extremely weak), DYSPNOEA (Problems breathing), HEADACHE (Indescribable headache), CHILLS (Chills), MYALGIA (My whole body ached), VOMITING (Feeling I was going to throw up or pass out) and NAUSEA (Nausea). The patient was treated with NAPROXEN SODIUM (ALEVE) at an unspecified dose and frequency and NAPROXEN at an unspecified dose and frequency. At the time of the report, HUNGER (Feeling extremely hungry like if I didn't eat anything), PALPITATIONS (Heart beat got faster), FEELING OF BODY TEMPERATURE CHANGE (Felt hot and cold), HEAD DISCOMFORT (Felt pressure in my head), DEHYDRATION (Feel dehydrated), ASTHENIA (Feel extremely weak), DYSPNOEA (Problems breathing), HEADACHE (Indescribable headache), CHILLS (Chills), MYALGIA (My whole body ached), VOMITING (Feeling I was going to throw up or pass out) and NAUSEA (Nausea) outcome was unknown.        The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown) was unknown.       The patient received their first dose of Moderna vaccine and 12 hours later, in morning the patient got up and began to have a lot of issues going on. The patient at first, felt extremely hungry and also felt hot and cold, and when the patient got up, they felt pressure in their head.   The patient came to work, and then it began to get worse, their whole body ached, and the patient had an indescribable headache, chills, and had a lot of pressure in their head. The patient felt extremely weak, like dehydrated. The patient also felt nauseated while working.  Reportedly, the patient went to see nurse at the station of their job, and the Nurse stated this could happen for the next 72 hours. The patient reported that their body was hurting all over and felt like they will throw up or pass out. The patient also had problems in breathing and their heartbeat went fast. The patient described that the faster they work, the faster their heart beats. This got worse at work, and the patient worked for an hour. The patient was not able to drive back home and was sitting in the parking lot.   It was also mentioned that the patient was pregnant and lost baby last week before vaccination.   No Concomitant product use was reported.