Polymyalgia rheumatica; Pain became more consistent; Arm pain/pain is in his arm; Could not lift arm; Inflammatory reaction; Shaking; he could not get out of bed, was shaking, and used a cane to walk; Pain in legs got worse; Bedridden; This spontaneous case was reported by a consumer (subsequently medically confirmed) and describes the occurrence of POLYMYALGIA RHEUMATICA (Polymyalgia rheumatica) in a 62-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.     The patient's past medical history included Pain, Rash, Panic attack (2 episodes) and Anxiety. Previously administered products included for an unreported indication: PREDNISONE (for 6 days). Concomitant products included PREDNISONE for Pain and Rash, METHYLPREDNISOLONE (MEDROL DOSEPAK) for an unknown indication.    On 17-Mar-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On an unknown date, the patient experienced POLYMYALGIA RHEUMATICA (Polymyalgia rheumatica) (seriousness criterion medically significant), PAIN (Pain became more consistent), PAIN IN EXTREMITY (Arm pain/pain is in his arm), ARTHRALGIA (Pain in shoulders), HYPOKINESIA (Could not lift arm), ARTHRALGIA (Left hip hurt), INFLAMMATION (Inflammatory reaction), TREMOR (Shaking), GAIT DISTURBANCE (he could not get out of bed, was shaking, and used a cane to walk), ARTHRALGIA (Joint pain) and PAIN IN EXTREMITY (Pain in legs got worse). At the time of the report, POLYMYALGIA RHEUMATICA (Polymyalgia rheumatica), PAIN (Pain became more consistent), PAIN IN EXTREMITY (Arm pain/pain is in his arm), ARTHRALGIA (Pain in shoulders), ARTHRALGIA (Left hip hurt), ARTHRALGIA (Joint pain) and PAIN IN EXTREMITY (Pain in legs got worse) had not resolved and HYPOKINESIA (Could not lift arm), INFLAMMATION (Inflammatory reaction), TREMOR (Shaking) and GAIT DISTURBANCE (he could not get out of bed, was shaking, and used a cane to walk) outcome was unknown.        The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) was unknown.       Since the patient's first dose of the Moderna vaccine, he had not been on prednisone the whole time but was recently put on a Medrol pack. He was diagnosed with polymyalgia rheumatica as his pain became more consistent after the first dose of the vaccine. His pain is in his arm and shoulders, his left hip hurt and he was not able to lift his arm all the way up.  The patient believed that the vaccine may had caused an inflammatory reaction that aggravated his pain that was present before the vaccine. The patient also stated there was a time that he was not able to get out of bed, he was shaking, and had to use a cane to walk. He says he never had joint pain, only stiffness when waking up and soreness in his hip and leg that was painful. After the vaccine, his arm hurt to the extent he could not sleep on it and the pain in his legs had worsened. He makes it very clear he had a lot of pain prior to the vaccine, but the pain he was experiencing now is more consistent.   This case was linked to MOD-2021-081568 (E2B Linked Report).; Sender's Comments: MOD-2021-081568:crosslink