Pain in right arm right at the wrist, running to my big thumb in my hand/ My muscle from my wrist to my thumb is corrupted/ It is painful to open and then to close it back; Pain in right arm right at the wrist, running to my big thumb in my hand; in pain all the time/pain is sitting there and wont leave; blood pressure went up double; My muscle from my wrist to my thumb is corrupted; This spontaneous case was reported by a consumer and describes the occurrence of ARTHRALGIA (Pain in right arm right at the wrist, running to my big thumb in my hand/ My muscle from my wrist to my thumb is corrupted/ It is painful to open and then to close it back) in a 71-year-old male patient who received mRNA-1273 (Moderna COVID-19 Vaccine) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     No Medical History information was reported.   On 06-Feb-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 06-Mar-2021, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) dosage was changed to 1 dosage form. On an unknown date, the patient experienced ARTHRALGIA (Pain in right arm right at the wrist, running to my big thumb in my hand/ My muscle from my wrist to my thumb is corrupted/ It is painful to open and then to close it back) (seriousness criterion disability), PAIN IN EXTREMITY (Pain in right arm right at the wrist, running to my big thumb in my hand), PAIN (in pain all the time/pain is sitting there and wont leave), BLOOD PRESSURE INCREASED (blood pressure went up double), and MYALGIA (My muscle from my wrist to my thumb is corrupted). At the time of the report, ARTHRALGIA (Pain in right arm right at the wrist, running to my big thumb in my hand/ My muscle from my wrist to my thumb is corrupted/ It is painful to open and then to close it back), PAIN IN EXTREMITY (Pain in right arm right at the wrist, running to my big thumb in my hand), PAIN (in pain all the time/pain is sitting there and wont leave), BLOOD PRESSURE INCREASED (blood pressure went up double), and MYALGIA (My muscle from my wrist to my thumb is corrupted) outcome was unknown.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On an unknown date, Blood pressure measurement: high (High) Increased. Patient Blood Pressure went double from what it is used to be..     For mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular), the reporter did not provide any causality assessments.   Concomitant medication were not provided. Treatment medication were not reported. Doctor gave a hand brazer to wear to patient and told to keep it wrapped. Patient got a X-ray done. Patient has mentioned that he has got disabled with a black cast on his hand.   This case was linked to MOD-2021-237280 (Patient Link).   Most recent FOLLOW-UP information incorporated above includes: On 25-Jun-2021: Patient demographics, and vaccine administration dates updated.; Sender's Comments: This case concerns a 71-year-old male with a serious unexpected event of arthralgia, and nonserious pain in extremity, pain, blood pressure increased, and myalgia. Event onset with unknown latency after second dose mRNA-1273. Based on current available information and temporal association between the use of the product and the start date of the event, a causal relationship cannot be excluded.