Problem with arm, all the way down to the elbow to where they freeze - right arm; Problem with arm, all the way down to the elbow to where they hurt - right arm, arm pain; Problem with muscles all the way down to the elbow to where they freeze - right arm; the whole right arm from shoulder to elbow feels like like a back spasm, as if you have a bad knee and need cortisone shot; arm inflammation; pain; Problem with muscles all the way down to the elbow to where they hurt- right arm; This spontaneous case was reported by a consumer and describes the occurrence of LIMB DISCOMFORT (Problem with arm, all the way down to the elbow to where they freeze - right arm), PAIN IN EXTREMITY (Problem with arm, all the way down to the elbow to where they hurt - right arm, arm pain), MUSCLE DISCOMFORT (Problem with muscles all the way down to the elbow to where they freeze - right arm), MUSCLE SPASMS (the whole right arm from shoulder to elbow feels like like a back spasm, as if you have a bad knee and need cortisone shot) and INFLAMMATION (arm inflammation) in a 53-year-old male patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 002A21A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     The patient's past medical history included No adverse event.   On 04-Mar-2021, the patient received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. On an unknown date, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) at an unspecified dose. On an unknown date, the patient experienced LIMB DISCOMFORT (Problem with arm, all the way down to the elbow to where they freeze - right arm), PAIN IN EXTREMITY (Problem with arm, all the way down to the elbow to where they hurt - right arm, arm pain), MUSCLE DISCOMFORT (Problem with muscles all the way down to the elbow to where they freeze - right arm), MUSCLE SPASMS (the whole right arm from shoulder to elbow feels like like a back spasm, as if you have a bad knee and need cortisone shot), INFLAMMATION (arm inflammation), PAIN (pain) and MYALGIA (Problem with muscles all the way down to the elbow to where they hurt- right arm). The patient was treated with Physical therapy for Limb discomfort; Physical therapy for Pain in extremity; Physical therapy for Muscle discomfort; Physical therapy for Muscle spasms; Physical therapy for Inflammation; Physical therapy for Pain and Physical therapy for Myalgia. At the time of the report, LIMB DISCOMFORT (Problem with arm, all the way down to the elbow to where they freeze - right arm), PAIN IN EXTREMITY (Problem with arm, all the way down to the elbow to where they hurt - right arm, arm pain), MUSCLE DISCOMFORT (Problem with muscles all the way down to the elbow to where they freeze - right arm), MUSCLE SPASMS (the whole right arm from shoulder to elbow feels like like a back spasm, as if you have a bad knee and need cortisone shot), INFLAMMATION (arm inflammation), PAIN (pain) and MYALGIA (Problem with muscles all the way down to the elbow to where they hurt- right arm) outcome was unknown.        For mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown), the reporter did not provide any causality assessments.   Most recent FOLLOW-UP information incorporated above includes: On 28-Apr-2021: Treatment details, contact details updated and event added