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HHT Clinic

UC San Diego Health's Hereditary Hemorrhagic Telangiectasia (HHT) Clinic is the region's only HHT Center of Excellence for this inherited blood vessel condition.

This means we can proactively manage your HHT and provide the appropriate follow-up care.

the clinic's director, you have access to an integrated team of medical specialists, knowledgeable about the unique symptoms and treatment options for HHT. 

The HTT Clinic is led by Dr. Michael Taddonio,

Signs and Symptoms of HHT

An estimated 90 percent of individuals with HHT are undiagnosed. Common signs and symptoms of the disorder include:

  • 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

The HHT Foundation recommends that all individuals diagnosed or suspected of having HHT undergo a thorough screening and consultation at an HHT Center of Excellence at least once in their life to prevent potentially serious complications. After discussing your health history, your recommended 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



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