Hereditary Hemorrhagic Telangiectasia (HHT), also known as Osler-Weber-Rendu Disease, is a rare genetic condition that affects blood vessels. The disorder contributes to the formation of abnormal blood vessels. As a result, vascular function gets impaired. This condition gives rise to various symptoms and complications .Individuals diagnosed with HHT may wonder about the use of genetic testing. Those at risk of developing this condition in the future due to genetic predisposition also need to be aware of this. This blog will shed some light on hhereditary hemorrhagic telangiectasiaereditary hemorrhagic telangiectasia. Also, this blog will explore the use of genetic testing for a rare condition like HHT.