Major types 1. Bleeding disorder inherited acquired 2. Thrombogenesis and thrombotic disorders 3. Blood vessel abnormity: VEC. Factors activation 4. Fibrinolytic factors abnormityMajor types 1.Bleeding disorder: inherited ~ & acquired ~ 2.Thrombogenesis and thrombotic disorders 3.Blood vessel abnormity: VEC, Factors activation 4.Fibrinolytic factors abnormity