fibromyalgia constantly flared up; anxiety; heart palpitations; episodes of high blood pressure; breathing problems; weaknesses; Inentional dose omission; symptoms of fibromyalgia constantly flared up; This spontaneous case was reported by a consumer and describes the occurrence of FIBROMYALGIA (fibromyalgia constantly flared up), ANXIETY (anxiety), PALPITATIONS (heart palpitations), BLOOD PRESSURE INCREASED (episodes of high blood pressure) and DYSPNOEA (breathing problems) in a 71-year-old patient of an unknown gender who received mRNA-1273 (Moderna COVID-19 Vaccine) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     The patient's past medical history included Joint ache and GERD. Concurrent medical conditions included Fibromyalgia and Irritable bowel syndrome.    In March 2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On an unknown date, the patient experienced FIBROMYALGIA (fibromyalgia constantly flared up), ANXIETY (anxiety), PALPITATIONS (heart palpitations), BLOOD PRESSURE INCREASED (episodes of high blood pressure), DYSPNOEA (breathing problems), ASTHENIA (weaknesses), INTENTIONAL DOSE OMISSION (Inentional dose omission) and CONDITION AGGRAVATED (symptoms of fibromyalgia constantly flared up). At the time of the report, FIBROMYALGIA (fibromyalgia constantly flared up), ANXIETY (anxiety), PALPITATIONS (heart palpitations), BLOOD PRESSURE INCREASED (episodes of high blood pressure), DYSPNOEA (breathing problems) and CONDITION AGGRAVATED (symptoms of fibromyalgia constantly flared up) outcome was unknown, ASTHENIA (weaknesses) had not resolved and INTENTIONAL DOSE OMISSION (Inentional dose omission) had resolved. Not Provided    DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): In 2014, Apolipoprotein A-I: 128 (normal) APO A-1 (mg/dL) was 128. In 2014, Blood fibrinogen: 128 (High) Fibrinogen (mg/DL) was 551. In 2014, C-reactive protein: 11.9 (High) Hs-CRP (mg/L) was 11.9. On an unknown date, Blood homocysteine: normal (normal) homocysteine on 10/21 was 10.1. its s. On an unknown date, Blood pressure measurement: high (High) high. On an unknown date, Haemoglobin: 15 (normal) 15. On an unknown date, Lymphocyte count: 28.6 (normal) Percent Lymp 28.6 normal. On an unknown date, Mean cell haemoglobin concentration: 32.5 (Low) 32.5. On an unknown date, Monocyte count: 9.4 (High) Percent Mono 9.4 high.     The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown) was unknown.       Patient lab data includes linoleoyl-GPC (ug/mL) 9.1, IR Score 7.9, Postprandial glucose index 8.5, Insulin 15 was insulin resistance, beta cell punctuality/strain. No concomitant medications and treatment information were reported.; Sender's Comments: This is a spontaneous case concerning a 71-year-old female patient with  medical history of Fibromyalgia, who experienced the non-serious  unexpected AESI Fibromyalgia and condition aggravated. The events occurred after the first dose of mRNA-1273 Moderna vaccine.  The medical history of Fibromyalgia could be a potentially confounder. Intentional dose omission was also captured as an event, as patient reports she never got the second dose due to adverse events. Thus, rechallenge is not applicable. The benefit-risk relationship of mRNA-1273 Moderna vaccine is not affected by this report.