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.
One of the most common causes of this imbalance in a dog is a tumor of the pituitary gland or an enlargement of the pituitary gland. The name Cushing is given to this disease because of the increase in cortisone levels within the pituitary gland which result from the tumor.ne of the most common causes of this imbalance in a dog is a tumor of the pituitary gland or an enlargement of the pituitary gland. The name Cushing is given to this disease because of the increase in cortisone levels within the pituitary gland which result from the tumor.