Headache; Increased muscle aches and pains that goes from her shoulder, back, and neck; Involuntary muscular spasms on her left arm/Muscle spasms are so severe it looks like an alien is about to pop out of arm; Metal taste on her mouth; Numbness that goes from the left arm down to her hands, the numbness goes up to the left side of her face as well; Back pain; Neck pain; Almost looks like there is a egglike thing on her arm, noticed a lump and swelling; Arm looks inflamed almost; Arm may have some fluid; Doctor advised to wait another 4 weeks (>42 days to receive the second dose); This spontaneous case was reported by a consumer (subsequently medically confirmed) and describes the occurrence of MUSCLE SPASMS (Involuntary muscular spasms on her left arm/Muscle spasms are so severe it looks like an alien is about to pop out of arm), DYSGEUSIA (Metal taste on her mouth), HYPOAESTHESIA (Numbness that goes from the left arm down to her hands, the numbness goes up to the left side of her face as well), BACK PAIN (Back pain) and NECK PAIN (Neck pain) in a 51-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 032B21A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     Previously administered products included for Immunization: Tetanus and Flu; for an unreported indication: Hormone replacement therapy. Past adverse reactions to the above products included No adverse event with Flu and Tetanus. Concomitant products included FINASTERIDE and METFORMIN for an unknown indication.   On 31-Mar-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) dosage was changed to 1 dosage form. On an unknown date, the patient received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 31-Mar-2021, the patient experienced OFF LABEL USE (Doctor advised to wait another 4 weeks (>42 days to receive the second dose)). On 01-Apr-2021, the patient experienced MUSCLE SPASMS (Involuntary muscular spasms on her left arm/Muscle spasms are so severe it looks like an alien is about to pop out of arm), DYSGEUSIA (Metal taste on her mouth), HYPOAESTHESIA (Numbness that goes from the left arm down to her hands, the numbness goes up to the left side of her face as well), BACK PAIN (Back pain), NECK PAIN (Neck pain), SWELLING (Almost looks like there is a egglike thing on her arm, noticed a lump and swelling), INFLAMMATION (Arm looks inflamed almost), OEDEMA (Arm may have some fluid) and MYALGIA (Increased muscle aches and pains that goes from her shoulder, back, and neck). On 04-Apr-2021, the patient experienced HEADACHE (Headache). On 31-Mar-2021, OFF LABEL USE (Doctor advised to wait another 4 weeks (>42 days to receive the second dose)) had resolved. On 05-Apr-2021, HEADACHE (Headache) had resolved. At the time of the report, MUSCLE SPASMS (Involuntary muscular spasms on her left arm/Muscle spasms are so severe it looks like an alien is about to pop out of arm), DYSGEUSIA (Metal taste on her mouth), HYPOAESTHESIA (Numbness that goes from the left arm down to her hands, the numbness goes up to the left side of her face as well), BACK PAIN (Back pain), NECK PAIN (Neck pain), SWELLING (Almost looks like there is a egglike thing on her arm, noticed a lump and swelling), INFLAMMATION (Arm looks inflamed almost), OEDEMA (Arm may have some fluid) and MYALGIA (Increased muscle aches and pains that goes from her shoulder, back, and neck) had resolved.        For mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular), the reporter did not provide any causality assessments.   Treatment for the event included Ice.   Most recent FOLLOW-UP information incorporated above includes: On 08-Jul-2021: follow up received (event outcome updated)