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.
Genetic Test for Von Willebrandâs Disease. Von Willebrandâs disease is an inherited bleeding disorder. It is also one of the most common as it is found in a wide variety of dog breeds. In von Willebrandâs disease bleeding time is greatly increased due to a malfunction in the process in which a blood clot is formed.ome of the breeds which now have a test for von Willebrandâs disease Type 1 include: Bernese Mountain Dogs, Doberman Pinschers, German Pinschers, Kerry Blue Terriers, Manchester Terriers, Papillons, Pembroke Welsh Corgis, and Poodles (all varieties).