that progressed to fainting occasionally (2 or 3 times); shortness of breath; severe weakness; problems with her heart meaning it aggravated a preexisting condition of mitral valve prolapse; tremors which are getting worse; tired, extreme fatigue; This spontaneous case was reported by a patient and describes the occurrence of SYNCOPE (that progressed to fainting occasionally (2 or 3 times)), DYSPNOEA (shortness of breath), ASTHENIA (severe weakness), MITRAL VALVE PROLAPSE (problems with her heart meaning it aggravated a preexisting condition of mitral valve prolapse) and TREMOR (tremors which are getting worse) in an 80-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch nos. 033C21A and 033C21A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     The patient's past medical history included Fainting (couple of times 20 or 30 years ago) and Open heart surgery (during which they inserted a mitral clip to prevent it from leaking so much blood) in November 2021. Concurrent medical conditions included Mitral valve prolapse (she's had for 10 years), Latex allergy (Latex), Allergy to NSAIDs (NSAIDs), Iodine allergy (Iodine), Drug allergy (Ambien), Drug allergy (Augmentin), Drug allergy (Darvocet), Drug allergy (Dilaudid), Drug allergy (Erythromycin), Drug allergy (Levaquin), Drug allergy (Macrobid), Drug allergy (Novocain), Drug allergy (Percocet), Drug allergy (Prilosec), Drug allergy (Prozac), Drug allergy (Flagyl), Drug allergy (Protonix), Drug allergy (Zetia), Drug allergy (Tagamet), Drug allergy (Singulair), Drug allergy (Pravastatin), Drug allergy (Fluticasone), Drug allergy (Nitroglycerin), Drug allergy (Creon), Drug allergy (Fludrocortisone), Drug allergy (Amlodipine), Drug allergy (Anabolic Steroids), Drug allergy (Phenobarbital), Drug allergy (Ticagrelor), Drug allergy (Amiodarone), Drug allergy (Cipro), Drug allergy (Codeine), Drug allergy (Sulfa), Drug allergy (Lisinopril), Drug allergy (Metoprolol), Drug allergy (Atenolol), Drug allergy (Brillanta) and Drug allergy (Digoxin).   On 07-May-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On 04-Jun-2021, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. In June 2021, the patient experienced DYSPNOEA (shortness of breath), ASTHENIA (severe weakness), MITRAL VALVE PROLAPSE (problems with her heart meaning it aggravated a preexisting condition of mitral valve prolapse), TREMOR (tremors which are getting worse) and FATIGUE (tired, extreme fatigue). On an unknown date, the patient experienced SYNCOPE (that progressed to fainting occasionally (2 or 3 times)). At the time of the report, SYNCOPE (that progressed to fainting occasionally (2 or 3 times)), ASTHENIA (severe weakness), MITRAL VALVE PROLAPSE (problems with her heart meaning it aggravated a preexisting condition of mitral valve prolapse) and FATIGUE (tired, extreme fatigue) outcome was unknown and DYSPNOEA (shortness of breath) and TREMOR (tremors which are getting worse) had not resolved.            Concomitant information was not provided. Treatment information was not provided.  Patient reported after receiving 2 primary doses (2nd dose lot # 033C21A on 4Jun2021) of the Moderna Covid-19 Vaccine. Patient said that these side effects started not long after her 2nd dose and patient went down hill fast. Patient was not and never had been diagnosed with myocarditis or pericarditis and never had Covid.