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.
Signs, Causes, Diagnosis and Treatment of Seizures in Dogs. Seizures are one of the most common neurological problems seen in dogs. A seizure happens when the cerebral cortex, part of the brain, functions abnormally. There are many different diseases that can cause seizures in dogs. Sometimes, as in the case of idiopathic epilepsy, the cause of seizure activity is unknown.