haemophilia is a hereditary disease in which the patient lacks some blood clotting factors.This disease is characterized by failure of blood of coagulate.if the persons suffering from this disease have an injury from which blood flows, the blood will not coagulate or clot or will coagulate insufficiently to stop the flow of blood. This may result in excessive loss of blood which in extreme cases, may prove to be fatal.In a normal human being if an injury occurs which bleed,the blood will soon coagulate and will form a clot at the point of rupture of the blood vessels blocking the blood flow.
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