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.
Pituitary Dependent Hyperadrenocorticism. This is the most common cause of Cushing's disease in dogs. Pituitary dependent hyperadrenocorticism accounts for roughly 85% of all instances of Cushing's disease in dogs.Pituitary dependent Cushing's disease involves an excess secretion of the hormone ACTH by the pituitary gland.ituitary Dependent Hyperadrenocorticism. This is the most common cause of Cushing's disease in dogs. Pituitary dependent hyperadrenocorticism accounts for roughly 85% of all instances of Cushing's disease in dogs.