Warm to the touch- received vaccine in left arm and that is where she is having the side effects; Numbness in arm; Itches left arm; At first, it was a dot, a raised bump and it was the size of half a dollar, swollen, puffy, now it is the size of her hand and then some- received vaccine in left arm and that is where she is having the side effects; Turned red and it is a large circle; it has tripled in size, almost the entire portion of her arm- received vaccine in left arm and that is where she is having the side effects; covid arm, side effects; This spontaneous case was reported by a consumer and describes the occurrence of VACCINATION SITE WARMTH (Warm to the touch- received vaccine in left arm and that is where she is having the side effects), HYPOAESTHESIA (Numbness in arm), PRURITUS (Itches left arm), VACCINATION SITE REACTION (covid arm, side effects) and VACCINATION SITE SWELLING (At first, it was a dot, a raised bump and it was the size of half a dollar, swollen, puffy, now it is the size of her hand and then some- received vaccine in left arm and that is where she is having the side effects) in a 43-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 078C21A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     No Medical History information was reported.    On 20-Jul-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. In July 2021, the patient experienced VACCINATION SITE REACTION (covid arm, side effects). On an unknown date, the patient experienced VACCINATION SITE WARMTH (Warm to the touch- received vaccine in left arm and that is where she is having the side effects), HYPOAESTHESIA (Numbness in arm), PRURITUS (Itches left arm), VACCINATION SITE SWELLING (At first, it was a dot, a raised bump and it was the size of half a dollar, swollen, puffy, now it is the size of her hand and then some- received vaccine in left arm and that is where she is having the side effects) and VACCINATION SITE ERYTHEMA (Turned red and it is a large circle; it has tripled in size, almost the entire portion of her arm- received vaccine in left arm and that is where she is having the side effects). The patient was treated with PARACETAMOL (TYLENOL) for Adverse reaction, at an unspecified dose and frequency; DIPHENHYDRAMINE HYDROCHLORIDE (BENADRYL [DIPHENHYDRAMINE HYDROCHLORIDE]) for Adverse reaction, at an unspecified dose and frequency and CORTISONE (topical) for Adverse reaction, at an unspecified dose and frequency. At the time of the report, VACCINATION SITE WARMTH (Warm to the touch- received vaccine in left arm and that is where she is having the side effects), HYPOAESTHESIA (Numbness in arm), PRURITUS (Itches left arm), VACCINATION SITE REACTION (covid arm, side effects), VACCINATION SITE SWELLING (At first, it was a dot, a raised bump and it was the size of half a dollar, swollen, puffy, now it is the size of her hand and then some- received vaccine in left arm and that is where she is having the side effects) and VACCINATION SITE ERYTHEMA (Turned red and it is a large circle; it has tripled in size, almost the entire portion of her arm- received vaccine in left arm and that is where she is having the side effects) had not resolved.        The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) was unknown.       Consumer reported the adverse events began approximately four days after receiving the vaccine. Patient reports visiting urgent care.  No concomitant medications were reported.