RHEUMATIC HEART VALVE DISEASE
It is caused by the valve damage as a result of acute rheumatic fever related to Streptococcus infection in childhood or young adulthood. It affects the entire valve apparatus or any portion of it. It is present mostly in developing countries. It results in scarring, thickening, fusing, shortening and calcification of the valve tissues resulting in either a narrow / stenotic or a leaking / regurgitant valve or a combination of both. It is the commonest cause of valve disease in India.