big red square at the site of the injection; injection site was swollen and was terribly itchy; injection site was terribly itchy; pain at the injection site; This spontaneous case was reported by a patient and describes the occurrence of INJECTION SITE PAIN (pain at the injection site), VACCINATION SITE ERYTHEMA (big red square at the site of the injection), VACCINATION SITE SWELLING (injection site was swollen and was terribly itchy) and VACCINATION SITE PRURITUS (injection site was terribly itchy) in a 72-year-old patient of an unknown gender who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 023LwA) for COVID-19 vaccination.     No medical history information was reported.     On 22-Jan-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On 22-Jan-2021, the patient experienced INJECTION SITE PAIN (pain at the injection site). On 23-Jan-2021, the patient experienced VACCINATION SITE ERYTHEMA (big red square at the site of the injection), VACCINATION SITE SWELLING (injection site was swollen and was terribly itchy) and VACCINATION SITE PRURITUS (injection site was terribly itchy). The patient was treated with IBUPROFEN (ADVIL [IBUPROFEN]) at an unspecified dose and frequency and DIPHENHYDRAMINE HYDROCHLORIDE (BENADRYL [DIPHENHYDRAMINE HYDROCHLORIDE]) at an unspecified dose and frequency. On 26-Jan-2021, VACCINATION SITE ERYTHEMA (big red square at the site of the injection) and VACCINATION SITE SWELLING (injection site was swollen and was terribly itchy) had resolved. At the time of the report, INJECTION SITE PAIN (pain at the injection site) and VACCINATION SITE PRURITUS (injection site was terribly itchy) outcome was unknown. Not Provided      The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown) was unknown.       No relevant concomitant medications were reported.  Treatment of the event including Ice. This case was received via an unknown source (no reference has been entered for a health authority or license partner) on 26-Jan-2021 and was forwarded to Moderna on 26-Jan-2021.    This spontaneous case was reported by a patient and describes the occurrence of INJECTION SITE PAIN (pain at the injection site), VACCINATION SITE ERYTHEMA (big red square at the site of the injection), VACCINATION SITE SWELLING (injection site was swollen and was terribly itchy) and VACCINATION SITE PRURITUS (injection site was terribly itchy) in a 72-year-old patient of an unknown gender who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 023LwA) for COVID-19 vaccination.     No medical history information was reported.     On 22-Jan-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On 22-Jan-2021, the patient experienced INJECTION SITE PAIN (pain at the injection site). On 23-Jan-2021, the patient experienced VACCINATION SITE ERYTHEMA (big red square at the site of the injection), VACCINATION SITE SWELLING (injection site was swollen and was terribly itchy) and VACCINATION SITE PRURITUS (injection site was terribly itchy). The patient was treated with IBUPROFEN (ADVIL [IBUPROFEN]) at an unspecified dose and frequency and DIPHENHYDRAMINE HYDROCHLORIDE (BENADRYL [DIPHENHYDRAMINE HYDROCHLORIDE]) at an unspecified dose and frequency. On 26-Jan-2021, VACCINATION SITE ERYTHEMA (big red square at the site of the injection) and VACCINATION SITE SWELLING (injection site was swollen and was terribly itchy) had resolved. At the time of the report, INJECTION SITE PAIN (pain at the injection site) and VACCINATION SITE PRURITUS (injection site was terribly itchy) outcome was unknown. Not Provided      The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown) was unknown.       No relevant concomitant medications were reported.  Treatment of the event including Ice.