patient received Pfizer booster dose; period showed up out of nowhere and only lasted for a day; extremely light headed; throwing up, a total of 4 times/ they could not get any food; fatigued; every joint was in so much pain; headache; chills; every muscle was in so much pain; body aches; felt flushed, then cold, then hot, then cold; actual sweats; everything bothered them/everything went completely awry/It was odd; breathing was not regular in pace, it was shallow and low; had no color in their face at all/they were white; felt flushed, then cold, then hot, then cold; This spontaneous case was reported by a consumer and describes the occurrence of FLUSHING (felt flushed, then cold, then hot, then cold), HYPERHIDROSIS (actual sweats), FEELING ABNORMAL (everything bothered them/everything went completely awry/It was odd), RESPIRATION ABNORMAL (breathing was not regular in pace, it was shallow and low) and PALLOR (had no color in their face at all/they were white) in a 37-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch nos. 017C21A and 026B21A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     No Medical History information was reported.   On 01-Apr-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On 29-Apr-2021, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. On 30-Apr-2021, the patient experienced FLUSHING (felt flushed, then cold, then hot, then cold), ARTHRALGIA (every joint was in so much pain), HEADACHE (headache), CHILLS (chills) and MYALGIA (body aches). 30-Apr-2021, the patient experienced HYPERHIDROSIS (actual sweats), FEELING ABNORMAL (everything bothered them/everything went completely awry/It was odd), RESPIRATION ABNORMAL (breathing was not regular in pace, it was shallow and low), PALLOR (had no color in their face at all/they were white), FEELING OF BODY TEMPERATURE CHANGE (felt flushed, then cold, then hot, then cold), DIZZINESS (extremely light headed), VOMITING (throwing up, a total of 4 times/ they could not get any food), FATIGUE (fatigued) and MYALGIA (every muscle was in so much pain). On 01-May-2021, the patient experienced MENSTRUAL DISORDER (period showed up out of nowhere and only lasted for a day). On 08-Dec-2021, the patient experienced INTERCHANGE OF VACCINE PRODUCTS (patient received Pfizer booster dose). The patient was treated with IBUPROFEN (ADVIL LIQUI GELS) for Adverse event, at a dose of 1 dosage form as required. On 30-Apr-2021, FLUSHING (felt flushed, then cold, then hot, then cold), HYPERHIDROSIS (actual sweats), FEELING ABNORMAL (everything bothered them/everything went completely awry/It was odd), RESPIRATION ABNORMAL (breathing was not regular in pace, it was shallow and low), PALLOR (had no color in their face at all/they were white), FEELING OF BODY TEMPERATURE CHANGE (felt flushed, then cold, then hot, then cold), DIZZINESS (extremely light headed), VOMITING (throwing up, a total of 4 times/ they could not get any food), FATIGUE (fatigued), ARTHRALGIA (every joint was in so much pain), HEADACHE (headache), CHILLS (chills), MYALGIA (every muscle was in so much pain) and MYALGIA (body aches) had resolved. On 02-May-2021, MENSTRUAL DISORDER (period showed up out of nowhere and only lasted for a day) had resolved. On 08-Dec-2021, INTERCHANGE OF VACCINE PRODUCTS (patient received Pfizer booster dose) had resolved.            No concomitant medications reported. On 08-Dec-2021, patient took Pfizer booster dose.