congenital factor V deficiency (MONDO_0009210) is an inherited bleeding disorder due to reduced plasma levels of factor V (FV) and characterized by mild to severe bleeding symptoms. Also known as: Owren disease, Parahemophilia, Proaccelerin deficiency, deficiency, labile, hereditary Factor V deficiency, hereditary factor V deficiency, hereditary hypoproaccelerinaemia, labile factor deficiency.