arm was a little swollen; red spot about 2 inches in diameter at the injection site /At the injection site, she developed a 2 inch diameter red spot; swelling of lymph nodes just below the front left shoulder blade. / Both sites had accompanying pain.; Both sites had accompanying pain.; arm hurt; injection site was hot, hotter than the rest of her arm / 1.5 degrees warmer than the rest of her body at the injection site, /  temperature difference is now .7 degrees.; on the same side of her body a little bump up on her shoulder/collarbone; This spontaneous case was reported by a consumer and describes the occurrence of PAIN IN EXTREMITY (arm hurt), VACCINATION SITE WARMTH (injection site was hot, hotter than the rest of her arm / 1.5 degrees warmer than the rest of her body at the injection site, /  temperature difference is now .7 degrees.), LIMB MASS (on the same side of her body a little bump up on her shoulder/collarbone), PERIPHERAL SWELLING (arm was a little swollen) and VACCINATION SITE ERYTHEMA (red spot about 2 inches in diameter at the injection site /At the injection site, she developed a 2 inch diameter red spot) in a 40-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 002F21A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     No Medical History information was reported.    On 11-Aug-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On 11-Aug-2021, the patient experienced PAIN IN EXTREMITY (arm hurt), VACCINATION SITE WARMTH (injection site was hot, hotter than the rest of her arm / 1.5 degrees warmer than the rest of her body at the injection site, /  temperature difference is now .7 degrees.), LIMB MASS (on the same side of her body a little bump up on her shoulder/collarbone), VACCINATION SITE ERYTHEMA (red spot about 2 inches in diameter at the injection site /At the injection site, she developed a 2 inch diameter red spot), LYMPHADENOPATHY (swelling of lymph nodes just below the front left shoulder blade. / Both sites had accompanying pain.) and VACCINATION SITE PAIN (Both sites had accompanying pain.). On 19-Aug-2021, the patient experienced PERIPHERAL SWELLING (arm was a little swollen). At the time of the report, PAIN IN EXTREMITY (arm hurt), LIMB MASS (on the same side of her body a little bump up on her shoulder/collarbone) and PERIPHERAL SWELLING (arm was a little swollen) outcome was unknown and VACCINATION SITE WARMTH (injection site was hot, hotter than the rest of her arm / 1.5 degrees warmer than the rest of her body at the injection site, /  temperature difference is now .7 degrees.), VACCINATION SITE ERYTHEMA (red spot about 2 inches in diameter at the injection site /At the injection site, she developed a 2 inch diameter red spot), LYMPHADENOPATHY (swelling of lymph nodes just below the front left shoulder blade. / Both sites had accompanying pain.) and VACCINATION SITE PAIN (Both sites had accompanying pain.) was resolving.        The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown) was unknown.       Additional information reported was that the patient was in the process of fertilization and have a healthy fertilized embryo frozen in the laboratory and decided they won't be attempting implantation until after the second shot.  No concomitant medications were reported.  No treatment information was provided by the reporter.   This case was linked to US-irms-MOD21-134161, US-irms-MOD21-134162, US-irms-MOD21-134163 (Patient Link).   Most recent FOLLOW-UP information incorporated above includes: On 23-Aug-2021: Event and Contact information updated