reaction on their arm; arm was very red, now it comes and go, but it is larger, the center looks bruised, it is warm to the touch, itchy and swollen; arm was very red, now it comes and go, but it is larger, the center looks bruised, it is warm to the touch, itchy and swollen; arm was very red, now it comes and go, but it is larger, the center looks bruised, it is warm to the touch, itchy and swollen; arm was very red, now it comes and go, but it is larger, the center looks bruised, it is warm to the touch, itchy and swollen; arm was very red, now it comes and go, but it is larger, the center looks bruised, it is warm to the touch, itchy and swollen; This spontaneous case was reported by a physician and describes the occurrence of SKIN REACTION (reaction on their arm), VACCINATION SITE BRUISING (arm was very red, now it comes and go, but it is larger, the center looks bruised, it is warm to the touch, itchy and swollen), VACCINATION SITE WARMTH (arm was very red, now it comes and go, but it is larger, the center looks bruised, it is warm to the touch, itchy and swollen), INJECTION SITE PRURITUS (arm was very red, now it comes and go, but it is larger, the center looks bruised, it is warm to the touch, itchy and swollen) and VACCINATION SITE SWELLING (arm was very red, now it comes and go, but it is larger, the center looks bruised, it is warm to the touch, itchy and swollen) in a 69-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 012M20A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     Concomitant products included ATORVASTATIN CALCIUM (LIPITOR) from 17-Feb-2021 to an unknown date for an unknown indication.    On 26-Jan-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 27-Jan-2021, the patient experienced SKIN REACTION (reaction on their arm), VACCINATION SITE BRUISING (arm was very red, now it comes and go, but it is larger, the center looks bruised, it is warm to the touch, itchy and swollen), VACCINATION SITE WARMTH (arm was very red, now it comes and go, but it is larger, the center looks bruised, it is warm to the touch, itchy and swollen), INJECTION SITE PRURITUS (arm was very red, now it comes and go, but it is larger, the center looks bruised, it is warm to the touch, itchy and swollen), VACCINATION SITE SWELLING (arm was very red, now it comes and go, but it is larger, the center looks bruised, it is warm to the touch, itchy and swollen) and INJECTION SITE ERYTHEMA (arm was very red, now it comes and go, but it is larger, the center looks bruised, it is warm to the touch, itchy and swollen). The patient was treated with DIPHENHYDRAMINE HYDROCHLORIDE (BENADRYL [DIPHENHYDRAMINE HYDROCHLORIDE]) at a dose of 1 dosage form. At the time of the report, SKIN REACTION (reaction on their arm), VACCINATION SITE BRUISING (arm was very red, now it comes and go, but it is larger, the center looks bruised, it is warm to the touch, itchy and swollen), VACCINATION SITE WARMTH (arm was very red, now it comes and go, but it is larger, the center looks bruised, it is warm to the touch, itchy and swollen), INJECTION SITE PRURITUS (arm was very red, now it comes and go, but it is larger, the center looks bruised, it is warm to the touch, itchy and swollen), VACCINATION SITE SWELLING (arm was very red, now it comes and go, but it is larger, the center looks bruised, it is warm to the touch, itchy and swollen) and INJECTION SITE ERYTHEMA (arm was very red, now it comes and go, but it is larger, the center looks bruised, it is warm to the touch, itchy and swollen) outcome was unknown.        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.   The patient took cortisone cream, ice, for treatment. Concomitant product includes airborne gummies 3 per day indication for use multi vitamin+ c ongoing.   Most recent FOLLOW-UP information incorporated above includes: On 24-Apr-2021: Patient details was reported. Concomitant drug was reported. Event outcome was reported.