Feeling spacey; Feeling dizzy; Kicked my arthritis up into high gear / now I am experiencing chronic arthritis; Severe hair loss; Concentration and memory problems; Intestional issues; want to report a vaccine event; Concentration and memory problems; Refuse to get the second vaccination; Feeling a little tired; This spontaneous case was reported by a consumer and describes the occurrence of FEELING ABNORMAL (Feeling spacey) and DIZZINESS (Feeling dizzy) in a patient of an unknown age and gender who received mRNA-1273 (Moderna COVID-19 Vaccine) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     Concurrent medical conditions included Arthritis (not noticeable arthritis).    On 31-May-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 02-Jun-2021, the patient experienced FATIGUE (Feeling a little tired). On 03-Jun-2021, the patient experienced FEELING ABNORMAL (Feeling spacey) (seriousness criterion hospitalization) and DIZZINESS (Feeling dizzy) (seriousness criterion hospitalization). On an unknown date, the patient experienced ARTHRITIS (Kicked my arthritis up into high gear / now I am experiencing chronic arthritis), ALOPECIA (Severe hair loss), MEMORY IMPAIRMENT (Concentration and memory problems), ABDOMINAL DISCOMFORT (Intestional issues), VACCINATION COMPLICATION (want to report a vaccine event), DISTURBANCE IN ATTENTION (Concentration and memory problems) and INTENTIONAL DOSE OMISSION (Refuse to get the second vaccination). At the time of the report, FEELING ABNORMAL (Feeling spacey), DIZZINESS (Feeling dizzy), ARTHRITIS (Kicked my arthritis up into high gear / now I am experiencing chronic arthritis), ALOPECIA (Severe hair loss), MEMORY IMPAIRMENT (Concentration and memory problems), ABDOMINAL DISCOMFORT (Intestional issues), DISTURBANCE IN ATTENTION (Concentration and memory problems) and FATIGUE (Feeling a little tired) had not resolved and VACCINATION COMPLICATION (want to report a vaccine event) and INTENTIONAL DOSE OMISSION (Refuse to get the second vaccination) outcome was unknown.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On 03-Jun-2021, Blood pressure measurement: 205/105 mmHg (High) High. On 03-Jun-2021, Computerised tomogram: normal (normal) Normal. On 03-Jun-2021, Echocardiogram: normal (normal) Normal. On 03-Jun-2021, Magnetic resonance imaging: normal (normal) Normal. On an unknown date, Blood pressure measurement: 180/95 mmHg (High) High. On an unknown date, Blood test: normal (normal) Normal.     mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) was withdrawn on an unknown date.       The patient refused to get second vaccine because the patient felt he/she would die from Covid than living a life of complication.  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.  Further information is not expected.   Most recent FOLLOW-UP information incorporated above includes: On 06-Aug-2021: Follow-up information received contains non-significant 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.  Further information is not expected.