the arm felt like someone socked me except it wasn't black, the arm was swollen and hard; the arm felt like someone socked me except it wasn't black, the arm was swollen and hard; This spontaneous case was reported by a patient and describes the occurrence of PERIPHERAL SWELLING (the arm felt like someone socked me except it wasn't black, the arm was swollen and hard) and PAIN IN EXTREMITY (the arm felt like someone socked me except it wasn't black, the arm was swollen and hard) in a 71-year-old female patient who received mRNA-1273 BIVALENT .222 (MODERNA COVID-19 VACCINE, BIVALENT (ORIGINAL AND OMICRON BA.4/BA.5)) (batch no. AS7147B) for COVID-19 prophylaxis.     The patient's past medical history included Breast cancer (15 yrs ago). Previously administered products included for COVID-19 prophylaxis: Moderna (Lot no. 039K202A, Dose 1) on 13-Jan-2021, Moderna (Lot no. 039Kk20A, Dose 2) on 10-Feb-2021, Moderna (Lot no. 005M21A, Dose 3) on 12-Apr-2022, Moderna (Lot no. AS7147B and Dose 4) on 04-Oct-2022. Past adverse reactions to the above products included No adverse event with Moderna, Moderna, Moderna and Moderna.    On 14-May-2023, the patient received fifth dose of mRNA-1273 BIVALENT .222 (MODERNA COVID-19 VACCINE, BIVALENT (ORIGINAL AND OMICRON BA.4/BA.5)) (unknown route) 1 dosage form. In 2023, the patient experienced PERIPHERAL SWELLING (the arm felt like someone socked me except it wasn't black, the arm was swollen and hard) and PAIN IN EXTREMITY (the arm felt like someone socked me except it wasn't black, the arm was swollen and hard). At the time of the report, PERIPHERAL SWELLING (the arm felt like someone socked me except it wasn't black, the arm was swollen and hard) and PAIN IN EXTREMITY (the arm felt like someone socked me except it wasn't black, the arm was swollen and hard) outcome was unknown.        For mRNA-1273 BIVALENT .222 (MODERNA COVID-19 VACCINE, BIVALENT (ORIGINAL AND OMICRON BA.4/BA.5)) (Unknown), the reporter did not provide any causality assessments.   Concomitant product use was not provided by the reporter. Treatment information was not provided.  patient stated that she was 71 years of age and received Spikevax PFS 12 yrs plus yesterday, 20Nov2023, around 6 PM and felt fine. She explained that she swims at the Y and does 50 laps a day and so today, 21Nov2023, figured she went and swim so the vaccine would move it through my body to work better, she thought it would get circulation going. By the time she got to Y she could barely move. she could barely lift my arm. she became suspicious, she think it was my lymphatic system but she don't know. The patient went on stating, she couldn't barely walk, it felt like hip was affected. It was a feeling of being tired. It's just a strange. She felt like it affected the lymphatic system or the lymph nodes. It felt like its inflamed a bit but it did not look swollen, neck doesn't look swollen, but arm was extremely sore, extremely sensitive above the elbow, eyes are also tired. Spikevax blew up my lymphatic system. It was an earie feeling, why mentally brain even wanted to go swimming even with no energy. Patient also reported that with the last time she got the shot, the arm felt like someone socked except it wasn't black, the arm was swollen and hard. My doctor told that if had side effects, this means the vaccine was working.   This case was linked to MOD-2023-747356 (Patient Link).