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.
Bottom line: Cushing's disease is a common condition in older dogs and is often mistaken for signs of normal aging. Although most dogs with Cushing's disease cannot be cured, their quality of life (as well as the owner's quality of life) can be improved, and their lives may be extended with early intervention.