elevated blood pressure; headache; felt queasy; chills; intermittent chills for few hours; palpitations within 3 minutes; felt flushed; heart rate increased; Diaphoretic; This spontaneous case was reported by a physician and describes the occurrence of HYPERTENSION (elevated blood pressure), PALPITATIONS (palpitations within 3 minutes), FLUSHING (felt flushed), HEART RATE INCREASED (heart rate increased) and HYPERHIDROSIS (Diaphoretic) in a 59-year-old male patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 026L02A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     Concurrent medical conditions included Shellfish allergy, Contrast media allergy and Premature ventricular contractions since 01-May-2004. Concomitant products included METOPROLOL SUCCINATE (TOPROL XL) from 01-May-2004 to an unknown date for Premature ventricular contractions, VIT D [VITAMIN D NOS], FISH OIL and PSYLLIUM HYDROPHILIC MUCILLOID (METAMUCIL [PSYLLIUM HYDROPHILIC MUCILLOID]) for an unknown indication.    On 08-Jan-2021 at 1:30 PM, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 08-Jan-2021, the patient experienced PALPITATIONS (palpitations within 3 minutes). 08-Jan-2021, the patient experienced FLUSHING (felt flushed). 08-Jan-2021, the patient experienced HEART RATE INCREASED (heart rate increased). 08-Jan-2021, the patient experienced HYPERHIDROSIS (Diaphoretic) and CHILLS (chills). 08-Jan-2021, the patient experienced CHILLS (intermittent chills for few hours). On 09-Jan-2021, the patient experienced HYPERTENSION (elevated blood pressure), HEADACHE (headache) and NAUSEA (felt queasy). The patient was treated with DIPHENHYDRAMINE HYDROCHLORIDE (BENADRYL [DIPHENHYDRAMINE HYDROCHLORIDE]) (oral) on 08-Jan-2021 at a dose of 50 milligram. On 08-Jan-2021, HYPERHIDROSIS (Diaphoretic), CHILLS (chills) and CHILLS (intermittent chills for few hours) had resolved. At the time of the report, HYPERTENSION (elevated blood pressure), HEADACHE (headache) and NAUSEA (felt queasy) was resolving and PALPITATIONS (palpitations within 3 minutes), FLUSHING (felt flushed) and HEART RATE INCREASED (heart rate increased) had resolved.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On an unknown date, Blood pressure measurement: 140/90 (Inconclusive) Inconclusive and 140-160/93-100 (High) Elevated. On an unknown date, Heart rate: 110 (High) increased and 75 (normal) normal.     For mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular), the reporter did not provide any causality assessments.   Action taken with mRNA-1273 in response to the event was not applicable.   This case was linked to MOD-2021-212255 (Patient Link).   Most recent FOLLOW-UP information incorporated above includes: On 31-Mar-2021: Follow-up information received on 31-MAR-2021, added contact information. On 07-Jun-2021: Follow-up information received on 7-JUN-2021, updated address, patient details(age, height, weight, race, ethnicity, relevant history, lab data), added vaccine details, concomitant medications, updated action taken and re-challenge field. Added additional events.