4th June 2025

Epidemiology

Worldwide, HHT is thought to affect between 1 in 5000 to 1 in 10,000 people. It is more commonly diagnosed in women, however this is likely due to men being less engaged with healthcare services. Given HHT is a multi-system disorder that can present in numerous different ways (e.g. epistaxis, gastrointestinal (GI) bleeds and intracerebral bleeds) medical professionals may fail to link the presentations to a unifying diagnosis; given all of this, HHT is probably under diagnosed.