Vascular Hemorrhagic Diatheses

Vascular-controlled bleeding tendencies can be subdivided into primary congenital and secondary ones, the latter acquired during an underlying disease (Table 3). The bleeding types correspond to those in thrombocytopenia and thrombocytopathies; the bleeding is mainly petechial. Bleeding after trivial injuries, nasal bleeding, bleeding after tooth extraction or operation, and menorrhagia are typical characteristics. The localized vascular malformations lead to circumscribed bleeding in one or more organs, in accordance with the localization of the vascular defect. Such conditions are easy to diagnose if the vascular malformation occurs at an accessible point.