Sometime I see stars; My left arm to not function. I.e., could not put on my seatbelt, could not put a shirt off/on over my head, could not lift my arm to open a cabinet door, could not dress myself, dy myself or blow dry my hair, could not use both arms for toilet access; sore arm; arm started hurting again; soreness around the injection site; This spontaneous case was reported by a consumer (subsequently medically confirmed) and describes the occurrence of VACCINATION SITE MOVEMENT IMPAIRMENT (My left arm to not function. I.e., could not put on my seatbelt, could not put a shirt off/on over my head, could not lift my arm to open a cabinet door, could not dress myself, dy myself or blow dry my hair, could not use both arms for toilet access), PAIN IN EXTREMITY (sore arm; arm started hurting again), VISUAL IMPAIRMENT (Sometime I see stars) and VACCINATION SITE PAIN (soreness around the injection site) in a 79-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 026L20A) for COVID-19 vaccination.     Concurrent medical conditions included Drug allergy (allergy to levofloxacin), High cholesterol, Drug allergy (Allergy to meloxicam) and Drug allergy (Allergy to meclizine). Concomitant products included ATORVASTATIN CALCIUM from 01-Feb-2015 to an unknown date for High cholesterol, ACETYLSALICYLIC ACID (BAYER ASPIRIN) from 01-Feb-2010 to an unknown date for Prophylaxis, PARACETAMOL (TYLENOL), ZOLPIDEM TARTRATE (AMBIEN), ESOMEPRAZOLE MAGNESIUM, CALCIUM and DOCUSATE SODIUM (STOOL SOFTENER) for an unknown indication.    On 28-Dec-2020 at 1:30 PM, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 28-Dec-2020, the patient experienced VACCINATION SITE PAIN (soreness around the injection site). On 07-Jan-2021, the patient experienced VACCINATION SITE MOVEMENT IMPAIRMENT (My left arm to not function. I.e., could not put on my seatbelt, could not put a shirt off/on over my head, could not lift my arm to open a cabinet door, could not dress myself, dy myself or blow dry my hair, could not use both arms for toilet access) and PAIN IN EXTREMITY (sore arm; arm started hurting again). On an unknown date, the patient experienced VISUAL IMPAIRMENT (Sometime I see stars). At the time of the report, VACCINATION SITE MOVEMENT IMPAIRMENT (My left arm to not function. I.e., could not put on my seatbelt, could not put a shirt off/on over my head, could not lift my arm to open a cabinet door, could not dress myself, dy myself or blow dry my hair, could not use both arms for toilet access) and VACCINATION SITE PAIN (soreness around the injection site) had resolved, PAIN IN EXTREMITY (sore arm; arm started hurting again) had resolved with sequelae and VISUAL IMPAIRMENT (Sometime I see stars) outcome was unknown.        The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) was unknown.       The patient states: "from start to finish it took 10 weeks until I was able to full use and function back in my arm."  Treatment of the events included, ibuprofen 2 times daily which the patient states did not help.  Most recent FOLLOW-UP information incorporated above includes: On 21-Jan-2021: New event, "I see stars sometimes" (visual impairment)  updated. On 16-May-2021: Patient's demographics, medical history, allergies, and outcome of the event movement disorder updated (completed ADR Form) On 18-May-2021: Follow-up information eceived on 18 May 2021 does not contain any new information.; Sender's Comments: Based on the current available information and temporal association between the use of the product and the start date of the events, a causal relationship cannot be excluded.