Cant not write; Cannot walk up the stairs, she used to walk "4 miles a day in winter time (30,000 steps) but now zero; Cannot get out of bed feels like she is 100 years old; Arms, knees, elbows and ankles feel like being crippled; Anxiety went through the roof; Joint pain continued to intensify; Rheumatoid arthritis; Arthritis flared up when she got the vaccine; She was so cold, could not get warm; Teeth were chattering; fever of 104.5F; This spontaneous case was reported by a consumer and describes the occurrence of RHEUMATOID ARTHRITIS (Rheumatoid arthritis), DYSGRAPHIA (Cant not write), GAIT INABILITY (Cannot walk up the stairs, she used to walk "4 miles a day in winter time (30,000 steps) but now zero), MOVEMENT DISORDER (Cannot get out of bed feels like she is 100 years old) and HYPOKINESIA (Arms, knees, elbows and ankles feel like being crippled) in a 62-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch nos. 031B21A and 002B21A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     Concurrent medical conditions included Asthma, Arthritis, Drug allergy (Aspirin Allergy) and Drug allergy (Advil Allergy).   On 16-Mar-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On 12-Apr-2021, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. On 12-Apr-2021, the patient experienced FEELING COLD (She was so cold, could not get warm), CHILLS (Teeth were chattering) and PYREXIA (fever of 104.5F). On 16-Jul-2021, the patient experienced RHEUMATOID ARTHRITIS (Rheumatoid arthritis) (seriousness criterion medically significant) and CONDITION AGGRAVATED (Arthritis flared up when she got the vaccine). On an unknown date, the patient experienced DYSGRAPHIA (Cant not write) (seriousness criterion disability), GAIT INABILITY (Cannot walk up the stairs, she used to walk "4 miles a day in winter time (30,000 steps) but now zero) (seriousness criterion disability), MOVEMENT DISORDER (Cannot get out of bed feels like she is 100 years old) (seriousness criterion disability), HYPOKINESIA (Arms, knees, elbows and ankles feel like being crippled) (seriousness criterion disability) and ANXIETY (Anxiety went through the roof). an unknown date, the patient experienced ARTHRALGIA (Joint pain continued to intensify). On 16-Apr-2021, PYREXIA (fever of 104.5F) had resolved. At the time of the report, RHEUMATOID ARTHRITIS (Rheumatoid arthritis) and ARTHRALGIA (Joint pain continued to intensify) had not resolved and DYSGRAPHIA (Cant not write), GAIT INABILITY (Cannot walk up the stairs, she used to walk "4 miles a day in winter time (30,000 steps) but now zero), MOVEMENT DISORDER (Cannot get out of bed feels like she is 100 years old), HYPOKINESIA (Arms, knees, elbows and ankles feel like being crippled), ANXIETY (Anxiety went through the roof), CONDITION AGGRAVATED (Arthritis flared up when she got the vaccine), FEELING COLD (She was so cold, could not get warm) and CHILLS (Teeth were chattering) outcome was unknown.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On 12-Apr-2021, Body temperature: 104.5 °F (High) 104.5°F. On an unknown date, Blood test: has autoimmune disorder (abnormal) Blood works revealed that she now has an autoimmune disorder.         Concomitant medications were not provided by the reporter. Treatment information was not provided.  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. Concomitant medical conditions (arthritis)  could be potentially confounders/co-suspects for the events.; 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. Concomitant medical conditions (arthritis)  could be potentially confounders/co-suspects for the events.