Definition of primary and secondary amenorrhea. Amenorrhea is the medical term for the absence of menstrual periods, either on a permanent or temporary basis. Amenorrhea can be classified as primary or secondary.
Most inherited bleeding disorders are the result of abnormal platelet function or a deficiency in one or more of the factors involved in the blood clotting system. The most serious and common inherited coagulation disorders in dogs are hemophilia(deficiency of factor VIII or IX) and von Willebrand's disease (lack of von Willebrand factor). Other coagulation disorders are discussed here.
Share. Canine heart disease is common and valvular heart disease is the most common cause of heart disease in dogs. Learn about the methods veterinarians use to diagnose mitral and tricuspid valve heart disease and read about ways to monitor your dog at home.eart disease in dogs is a common diagnosis. In large breed dogs, dilated cardiomyopathy is the most common cause of heart disease. Learn more about canine dilated cardiomyopathy and what causes this heart disease in dogs.