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.
|Medical Terms||Other Names||
|80%-99% of people have these symptoms|
Pain in stomach
Stomach pain[ more ]
Easy bruising[ more ]
Nosebleed[ more ]
Increased spleen size
Ringing in ears
Ringing in the ears[ more ]
|30%-79% of people have these symptoms|
Tiredness[ more ]
|5%-29% of people have these symptoms|
Blood clot in artery
|Portal vein thrombosis||
Blood clot in portal vein
Skin itching[ more ]
|Percent of people who have these symptoms is not available through HPO|
|Increased megakaryocyte count||0005513|
|Increased red blood
Elevated white blood count
High white blood count
Increased blood leukocyte number[ more ]
Low platelet count
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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.
Support and advocacy groups can help you connect with other patients and families, and they can provide valuable services. Many develop patient-centered information and are the driving force behind research for better treatments and possible cures. They can direct you to research, resources, and services. Many organizations also have experts who serve as medical advisors or provide lists of doctors/clinics. Visit the group’s website or contact them to learn about the services they offer. Inclusion on this list is not an endorsement by GARD.
Living with a genetic or rare disease can impact the daily lives of patients and families. These resources can help families navigate various aspects of living with a rare disease.
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.
New NCATS Rare Diseases Research Video
December 27, 2017
Rare Disease Day at NIH on March 1, 2018
December 19, 2017
The Jak/Stat Pathway: 20 Years from Discovery to Drugs
Thursday, September 22, 2011 -
Saturday, September 24, 2011
Location: NIH Natcher Center, Bethesda, MD
Description: As a scientific conference, the primary goal is the dissemination of recent data and developments in the field to intersted researchers in the field. The conference includes a scientific program and reception, which will help to foster collaboration and networking. Participants should achieve a better understanding of the state of the art research in this exciting and clinically relevant field.
Contact: Megan Laycock,(301) 594-7527Megan.firstname.lastname@example.org
Co-funding Institute(s): National Institute of Arthritis and Musculoskeletal and Skin Diseases, Office of Rare Diseases Research
Questions sent to GARD may be posted here if the information could be helpful to others. We remove all identifying information when posting a question to protect your privacy. If you do not want your question posted, please let us know. Submit a new question
My polycythemia vera is being controlled, but I still have itching after a shower. Is there anything I can do to prevent the awful itching? See answer
I was living in a home that had a slow leak of carbon monoxide poisoning and was never sick with this until we were exposed to carbon monoxide poisoning. Is there a correlation between carbon monoxide poisoning and polycythemia vera? See answer
I was diagnosed with polycythemia vera 20 years ago, and I am JAK2 positive. My brother recently learned that his red blood cell count is very high and will now be seeing a hematologist. Is it strange that my brother may have the same condition, even though it is so rare? I researched a polycythemia vera cluster that occurred in several counties and learned that my brother and I had lived in one of them. Has anyone else researched this issue? See answer
I have polycythemia vera. Can this condition be passed on to my children? See answer