Mondo Description A fairly common and often benign valvular heart disorder characterized by redundancy or hooding of mitral valve leaflets so that they prolapse into the left atrium, often causing mitral regurgitation. It is often a symptomless condition but may be marked by varied symptoms (e.g. chest pain, fatigue, dizziness, dyspnea, or palpitations) leading in some cases to endocarditis or ventricular tachycardia.

Disease Ontology Description A mitral valve disease where one or both of the cusps of the mitral valve bulge or collapse backward in the left atrium during systole.