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.
Acquired. 1  Liver dysfunction or disease â almost all coagulation factors are produced in the liver; liver disease may result in decreased production of factors. 2  Vitamin K deficiency â the synthesis of several coagulation factors (II, VII, IX, X) requires vitamin K. bleeding disorder may be due to a lack of one or more clotting factors or the result of factors that do not function properly. Deficiency or dysfunction of coagulation factors may have genetic causes (inherited) or may be the result of another disease or condition. The following are a few examples: Inherited.