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Hereditary Hemorrhagic Telangiectasia (HHT) Program

At UC San Diego Health, you find experts who can help you proactively manage your hereditary hemorrhagic telangiectasia (HHT), an inherited condition of the blood vessels.  

We have a coordinated team of medical specialists, knowledgeable about the unique symptoms and treatment options for the disease.

The HTT program is led by Dr. Michael Taddonio,

Signs and Symptoms of HHT

Because an estimated 90 percent of individuals with HHT go undiagnosed, it is important that you recognize common signs and symptoms of the disorder:  

  • Nosebleeds (epistaxis) -- about 90 percent of individuals with HHT will have recurrent nosebleeds by their 20s
  • Cutaneous telangiectasia – red or purple spots on the face or hands
  • Shortness of breath
  • Exercise intolerance or fatigue
  • Migraine headaches
  • Seizures
  • Abdominal pain
  • Leg swelling
  • Anemia
  • Artery malformations, which may affect pulmonary (lung) or cerebral (brain) circulation

Screening for HHT

If you have signs and symptoms of HHT,  we strongly recommend that you undergo a thorough screening and consultation to make sure your condition is correctly diagnosed and treated. Based on your health history, your screening may include:

  • Physical exam
  • Blood count
  • Chest X-ray
  • Ultrasound
  • MRI
  • Contrast echocardiogram (bubble echo study)
  • CT scan
  • Colonoscopy or upper endoscopy
  • Genetic testing

Treatment for HHT

We offer comprehensive treatment options to address all the different parts of the body that the disorder may affect, including:
  • Treatment for nosebleeds with over the counter sprays / gels, moisture and humidification, hormone therapy, sclerotherapy and coblation
  • Laser treatment of telangiectasias on the skin of the hands, face and mouth
  • Endovascular embolization for arteriovenous malformations (AVMs) of the lungs or brain
  • Radiation and surgical removal of AVMs of the brain
  • A range of options for treating gastrointestinal bleeding, including laser photocoagulation, thermal therapy, and intravenous and oral medications
  • Intravenous blood vessel inhibitor drugs and adjunct therapeutic management for AVMs of the liver

Appointments & Referrals



Our Specialists