Could not perform her minimal daily work and activities; Different kind of dizziness ( Jell-O head, tipsy feeling without head spinning); Tinnitus; Vestibular neuritis; Stiff neck; Migraine type of headache; Pressure in her brain; Headache; This spontaneous case was reported by a consumer and describes the occurrence of DECREASED ACTIVITY (Could not perform her minimal daily work and activities), FEELING DRUNK (Different kind of dizziness ( Jell-O head, tipsy feeling without head spinning)), TINNITUS (Tinnitus), VESTIBULAR NEURONITIS (Vestibular neuritis), MUSCULOSKELETAL STIFFNESS (Stiff neck), MIGRAINE (Migraine type of headache), HEAD DISCOMFORT (Pressure in her brain) and HEADACHE (Headache) in a 58-year-old patient of an unknown gender who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch nos. 013A21A and 0316204) for COVID-19 vaccination.     No Medical History information was reported.   On 29-Jan-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On 26-Feb-2021, 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 experienced DECREASED ACTIVITY (Could not perform her minimal daily work and activities) (seriousness criterion hospitalization), FEELING DRUNK (Different kind of dizziness ( Jell-O head, tipsy feeling without head spinning)) (seriousness criterion hospitalization), TINNITUS (Tinnitus) (seriousness criterion hospitalization), VESTIBULAR NEURONITIS (Vestibular neuritis) (seriousness criterion hospitalization), MUSCULOSKELETAL STIFFNESS (Stiff neck) (seriousness criterion hospitalization), MIGRAINE (Migraine type of headache) (seriousness criterion hospitalization), HEAD DISCOMFORT (Pressure in her brain) (seriousness criterion hospitalization) and HEADACHE (Headache) (seriousness criterion hospitalization). At the time of the report, DECREASED ACTIVITY (Could not perform her minimal daily work and activities), FEELING DRUNK (Different kind of dizziness ( Jell-O head, tipsy feeling without head spinning)), TINNITUS (Tinnitus) and VESTIBULAR NEURONITIS (Vestibular neuritis) outcome was unknown and MUSCULOSKELETAL STIFFNESS (Stiff neck), MIGRAINE (Migraine type of headache), HEAD DISCOMFORT (Pressure in her brain) and HEADACHE (Headache) had not resolved.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On an unknown date, Acoustic stimulation tests: vestibular neuritis (abnormal) vestibular neuritis. On an unknown date, Magnetic resonance imaging: vestibular neuritis (abnormal) vestibular neuritis.     For mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown), the reporter did not provide any causality assessments.   No concomitant medication was reported.  No treatment medication was reported.  Company comment: 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.   This case was linked to MOD-2021-304573 (Patient Link).; 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.