National Center for Advancing and Translational Sciences Genetic and Rare Diseases Information Center, a program of the National Center for Advancing and Translational Sciences

Hereditary hemorrhagic telangiectasia type 2



Other Names:
HHT2; Osler Weber Rendu syndrome type 2; Telangiectasia hereditary hemorrhagic type 2; HHT2; Osler Weber Rendu syndrome type 2; Telangiectasia hereditary hemorrhagic type 2; ORW2 See More
Categories:
This disease is grouped under:

This table lists symptoms that people with this disease may have. For most diseases, symptoms will vary from person to person. People with the same disease may not have all the symptoms listed. This information comes from a database called the Human Phenotype Ontology (HPO) . The HPO collects information on symptoms that have been described in medical resources. The HPO is updated regularly. Use the HPO ID to access more in-depth information about a symptom.

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Medical Terms Other Names
Learn More:
HPO ID
80%-99% of people have these symptoms
Epistaxis
Bloody nose
Frequent nosebleeds
Nose bleed
Nose bleeding
Nosebleed
[ more ]
0000421
Telangiectasia of the skin 0100585
30%-79% of people have these symptoms
Cavernous hemangioma
Collection of dilated blood vessels that forms mass
0001048
Cholecystitis
Gallbladder inflammation
0001082
Microcytic anemia 0001935
Migraine
Intermittent migraine headaches
Migraine headache
Migraine headaches
[ more ]
0002076
Portal hypertension 0001409
Spontaneous hematomas 0007420
Visceral angiomatosis 0100761
5%-29% of people have these symptoms
Amblyopia
Lazy eye
Wandering eye
[ more ]
0000646
Cerebral hemorrhage
Bleeding in brain
0001342
Cholelithiasis
Gallstones
0001081
Cirrhosis
Scar tissue replaces healthy tissue in the liver
0001394
Congestive heart failure
Cardiac failure
Cardiac failures
Heart failure
[ more ]
0001635
Conjunctival telangiectasia
Small dilated blood vessels near membrane covering front of eye and eyelids
0000524
Esophageal varix
Enlarged vein in esophagus
0002040
Gastrointestinal hemorrhage
Gastrointestinal bleeding
0002239
Hematuria
Blood in urine
0000790
Hemoptysis
Coughing up blood
0002105
Hepatic failure
Liver failure
0001399
Intestinal polyposis 0200008
Nephrolithiasis
Kidney stones
0000787
Peripheral arteriovenous fistula 0100784
Pulmonary arterial hypertension
Increased blood pressure in blood vessels of lungs
0002092
Pulmonary embolism
Blood clot in artery of lung
0002204
Retinal telangiectasia 0007763
Seizure 0001250
Subarachnoid hemorrhage 0002138
Transient ischemic attack
Mini stroke
0002326
Venous thrombosis
Blood clot in vein
0004936
Percent of people who have these symptoms is not available through HPO
Anemia
Low number of red blood cells or hemoglobin
0001903
Autosomal dominant inheritance 0000006
Brain abscess 0030049
Cerebral arteriovenous malformation 0002408
Choriocapillaris atrophy 0030491
Clubbing
Clubbing of fingers and toes
0001217
Cyanosis
Blue discoloration of the skin
0000961
Dyspnea
Trouble breathing
0002094
Fingerpad telangiectases
Small dilated blood vessels in fingerpads
0006107
Gastrointestinal angiodysplasia 0000471
Gastrointestinal arteriovenous malformation 0002629
Gastrointestinal telangiectasia
Small, enlarged blood vessels near skin
0002604
Hematemesis
Vomitting blood
0002248
Hematochezia
Rectal bleeding
0002573
Hepatic arteriovenous malformation 0006574
Hypertension 0000822
Ischemic stroke 0002140
Lip telangiectasia 0000214
Melena 0002249
Nail bed telangiectasia 0001232
Nasal mucosa telangiectasia
Spider veins of mucosa of nose
Spider veins of mucous membrane of nose
Spider veins of nasal mucous membrane
[ more ]
0000434
Palate telangiectasia
Telangiectasia of the roof of the mouth
0002707
Polycythemia
Increased red blood cells
0001901
Pulmonary arteriovenous malformation 0006548
Right-to-left shunt 0001694
Spinal arteriovenous malformation 0002390
Spontaneous, recurrent epistaxis
Recurring nosebleed
Spontaneous, recurrent nosebleed
[ more ]
0004406
Tongue telangiectasia 0000227
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Last updated: 7/1/2020

Making a diagnosis for a genetic or rare disease can often be challenging. Healthcare professionals typically look at a person’s medical history, symptoms, physical exam, and laboratory test results in order to make a diagnosis. The following resources provide information relating to diagnosis and testing for this condition. If you have questions about getting a diagnosis, you should contact a healthcare professional.

Testing Resources

  • The Genetic Testing Registry (GTR) provides information about the genetic tests for this condition. The intended audience for the GTR is health care providers and researchers. Patients and consumers with specific questions about a genetic test should contact a health care provider or a genetics professional.

If you need medical advice, you can look for doctors or other healthcare professionals who have experience with this disease. You may find these specialists through advocacy organizations, clinical trials, or articles published in medical journals. You may also want to contact a university or tertiary medical center in your area, because these centers tend to see more complex cases and have the latest technology and treatments.

If you can’t find a specialist in your local area, try contacting national or international specialists. They may be able to refer you to someone they know through conferences or research efforts. Some specialists may be willing to consult with you or your local doctors over the phone or by email if you can't travel to them for care.

You can find more tips in our guide, How to Find a Disease Specialist. We also encourage you to explore the rest of this page to find resources that can help you find specialists.

Healthcare Resources


Research helps us better understand diseases and can lead to advances in diagnosis and treatment. This section provides resources to help you learn about medical research and ways to get involved.

Patient Registry


These resources provide more information about this condition or associated symptoms. The in-depth resources contain medical and scientific language that may be hard to understand. You may want to review these resources with a medical professional.

Where to Start

In-Depth Information

  • GeneReviews provides current, expert-authored, peer-reviewed, full-text articles describing the application of genetic testing to the diagnosis, management, and genetic counseling of patients with specific inherited conditions.
  • Medscape Reference provides information on this topic. You may need to register to view the medical textbook, but registration is free.
  • The Monarch Initiative brings together data about this condition from humans and other species to help physicians and biomedical researchers. Monarch’s tools are designed to make it easier to compare the signs and symptoms (phenotypes) of different diseases and discover common features. This initiative is a collaboration between several academic institutions across the world and is funded by the National Institutes of Health. Visit the website to explore the biology of this condition.
  • Online Mendelian Inheritance in Man (OMIM) is a catalog of human genes and genetic disorders. Each entry has a summary of related medical articles. It is meant for health care professionals and researchers. OMIM is maintained by Johns Hopkins University School of Medicine. 
  • Orphanet is a European reference portal for information on rare diseases and orphan drugs. Access to this database is free of charge.
    Orphanet
    Orphanet
  • PubMed is a searchable database of medical literature and lists journal articles that discuss Hereditary hemorrhagic telangiectasia type 2. Click on the link to view a sample search on this topic.

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