HHT is a hereditary disorder characterized by the proliferation of aberrant vascular tissue. HHT can manifest itself most notably through proliferation of telangiectasias or arteriovascular malformations (AVMs). In most cases formation of poorly formed blood vessels, telangiectasias, in the nasal septum lead to repeated bouts of nosebleeds (epistaxis). Typically treatment of these vessels with cauterization damages the nasal septum, leading to septal perforation.
