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.
Cushing's Disease (hyperadrenocorticism) is a common condition in older dogs, often mistaken for the aging process itself. Dogs gain weight, lose hair, urinate in the house, and make owners begin to prematurely consider euthanasia. Yet Cushing's disease is treatable and that treatment can result in a longer, more comfortable life for the dog and its owner. Thus, it is important for the regular pet owner to learn the basic facts about Cushing's disease.