What is hht?

Hht. Hereditary hemorrhagic telangiectasia, also known as Osler Weber Rendu syndrome is a genetic disorder that affects approximately 1 in 5,000 individuals.

   At present in the uk, most people with hht are not diagnosed, though most will be aware that they, or family members, have frequent nosebleeds and or telangiectasias.

   Hht leads to the development of abnormal blood vessels. When present in the nose, and in the gut, they may bleed. Over long periods, chronic bleeding exhausts the body’s iron stores, and people may become anemic.      Hht also leads to the development of abnormal vessels called arteriovenous malformations (avm's) in internal organs such as the lungs, liver and brain, and to other rarer complications. Despite requiring additional treatments and interventions, life expectancy is normal for the majority of people with hht.

   If you are suspected or diagnosed as having hht you will screened for related conditions such as anemia and avm's.



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