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Disease at a Glance

Summary
Hypocomplementemic urticarial vasculitis (HUV) is a rare form of vasculitis characterized by inflammation of the small blood vessels and low levels of complement proteins in the blood. HUV causes recurrent episodes of hives (urticaria) and painful skin lesions that itch or burn. Individuals with HUV may also have systemic, multiorgan involvement, causing arthritic joint pain; pulmonary (lung) disease; ocular (eye) inflammation; kidney inflammation; or various other symptoms. Some scientists refer to the condition as HUV syndrome (HUVS) when it is more severe and there is significant systemic involvement. Other scientists call the condition HUVS in the absence of systemic disease. In some cases, the terms are used as synonyms. There appears to be controversy regarding the nomenclature and classification of HUV and HUVS, and whether they are distinct conditions or represent a continuum of the same disease. Both genetic and environmental factors are thought to play a role in causing HUV. It generally occurs sporadically, but familial cases have been reported. It is thought to develop due to an abnormal immune system response involving specific proteins that work together to fight organisms that cause infections. In some cases HUV may be associated with an underlying infection or systemic diseases such as systemic lupus, Sjögren's syndrome, monoclonal gammopathy, or blood disorders.
Summary
Hypocomplementemic urticarial vasculitis (HUV) is a rare form of vasculitis characterized by inflammation of the small blood vessels and low levels of complement proteins in the blood. HUV causes recurrent episodes of hives (urticaria) and painful skin lesions that itch or burn. Individuals with HUV may also have systemic, multiorgan involvement, causing arthritic joint pain; pulmonary (lung) disease; ocular (eye) inflammation; kidney inflammation; or various other symptoms. Some scientists refer to the condition as HUV syndrome (HUVS) when it is more severe and there is significant systemic involvement. Other scientists call the condition HUVS in the absence of systemic disease. In some cases, the terms are used as synonyms. There appears to be controversy regarding the nomenclature and classification of HUV and HUVS, and whether they are distinct conditions or represent a continuum of the same disease. Both genetic and environmental factors are thought to play a role in causing HUV. It generally occurs sporadically, but familial cases have been reported. It is thought to develop due to an abnormal immune system response involving specific proteins that work together to fight organisms that cause infections. In some cases HUV may be associated with an underlying infection or systemic diseases such as systemic lupus, Sjögren's syndrome, monoclonal gammopathy, or blood disorders.
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Resource(s) for Medical Professionals and Scientists on This Disease:

About Hypocomplementemic urticarial vasculitis

Many rare diseases have limited information. Currently, GARD aims to provide the following information for this disease:

  • Population Estimate:This section is currently indevelopment.
  • Symptoms:May start to appear as a Child and as an Adult.
  • Cause:This disease is caused by a change in the genetic material (DNA).
  • Organizations:Patient organizations are available to help find a specialist, or advocacy and support for this specific disease.
  • Categories:Genetic DiseasesKidney Diseases
When Do Symptoms of Hypocomplementemic urticarial vasculitis Begin?
Symptoms of this disease may start to appear as a Child and as an Adult.

The age symptoms may begin to appear differs between diseases. Symptoms may begin in a single age range, or during several age ranges. The symptoms of some diseases may begin at any age. Knowing when symptoms may have appeared can help medical providers find the correct diagnosis.
Prenatal
Before Birth
Newborn
Birth-4 weeks
Infant
1-23 months
Child Selected
2-11 years
Adolescent
12-18 years
Adult Selected
19-65 years
Older Adult
65+ years
Symptoms may start to appear as a Child and as an Adult.

Symptoms

The types of symptoms experienced, and their intensity, may vary among people with this disease. Your experience may be different from others. Consult your health care team for more information.

The following describes the symptom(s) associated with this disease along with the corresponding body system(s), description, synonyms, and frequency (Note: Not all possible symptoms may be listed):
Immune System Immune System

42 Symptoms

42 Symptoms

42 Symptoms

Immune System

The immune system is a complex network of cells, tissues, and organs that together help the body fight infections and other diseases. This system is made up of the skin, mucous membranes, white blood cells, and organs and tissues of the lymph system, including the thymus, spleen, tonsils, lymph nodes, lymph vessels and bone marrow. Common symptoms of problems in the immune system include fatigue, joint pain, skin rash, abdominal pain or digestive issues, fever, swollen glands, repeated infections, or headaches. Diseases of the immune system may be diagnosed and treated by an allergist, immunologist, or rheumatologist.

Causes

What Causes This Disease?

Genetic Mutations

Genetic mutations may be inherited, they may occur randomly as cells divide, or they may result from other factors such as contracted viruses or exposure to harmful environmental elements.
Can This Disease Be Passed Down From Parent to Child?

Autosomal Recessive

Autosomal recessive is an inheritance pattern of some genetic diseases. A child must inherit a copy of the mutated gene from both biological parents to be affected.

Find Your Community

How Can Patient Organizations Help?

Patient organizations can help patients and families connect. They build public awareness of the disease and are a driving force behind research to improve patients' lives. They may offer online and in-person resources to help people live well with their disease. Many collaborate with medical experts and researchers.

Services of patient organizations differ, but may include:

  • Ways to connect to others and share personal stories
  • Easy-to-read information
  • Up-to-date treatment and research information
  • Patient registries
  • Lists of specialists or specialty centers
  • Financial aid and travel resources

Please note: GARD provides organizations for informational purposes only and not as an endorsement of their services. Please contact an organization directly if you have questions about the information or resources it provides.

View GARD's criteria for including patient organizations, which can be found under the FAQs on our About page. Request an update or to have your organization added to GARD

Patient Organizations

7 Organizations

Organization Name

Who They Serve

Helpful Links

Country

People With

Hypocomplementemic urticarial vasculitis

Helpful Links
Country

United States

People With

Kidney Diseases

Helpful Links
Country

United States

People With

Kidney Diseases

Helpful Links
Country

United States

People With

Rare Diseases

Helpful Links
Country

United States

People With

Rare Diseases

Helpful Links
Country

United States

People With

Rare Diseases

Helpful Links
Country

United States

People With

Rare Diseases

Helpful Links
Country

United States

Participating in Clinical Studies

Clinical studies are part of clinical research and play an important role in medical advances, including for rare diseases. Through clinical studies, researchers may ultimately uncover better ways to treat, prevent, diagnose, and understand human diseases.

What Are Clinical Studies?

  1. Clinical trials determine if a new test or treatment for a disease is effective and safe by comparing groups receiving different tests/treatments.
  2. Observational studies involve recording changes over time among a specific group of people in their natural settings.
Learn more about clinical trials from this U.S. Food & Drug Administration webpage.

Why Participate in Clinical Studies?

What if There Are No Available Clinical Studies?

Join the All of Us Research Program!

What Are Clinical Studies?

Clinical studies are medical research involving people as participants. There are two main types of clinical studies:
  1. Clinical trials determine if a new test or treatment for a disease is effective and safe by comparing groups receiving different tests/treatments.
  2. Observational studies involve recording changes over time among a specific group of people in their natural settings.
Learn more about clinical trials from this U.S. Food & Drug Administration webpage.
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Why Participate in Clinical Studies?

People participate in clinical trials for many reasons. People with a disease may participate to receive the newest possible treatment and additional care from clinical study staff as well as to help others living with the same or similar disease. Healthy volunteers may participate to help others and to contribute to moving science forward.

To find the right clinical study we recommend you consult your doctors, other trusted medical professionals, and patient organizations. Additionally, you can use ClinicalTrials.gov to search for clinical studies by disease, terms, or location.
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What if There Are No Available Clinical Studies?

Join the All of Us Research Program!

ClinicalTrials.gov, an affiliate of NIH, provides current information on clinical research studies in the United States and abroad. Talk to a trusted doctor before choosing to participate in any clinical study. We recommend checking this site often and searching for studies with related terms/synonyms to improve results.
Contact a GARD Information Specialist if you need help finding more information on this rare disease or available clinical studies. Please note that GARD cannot enroll individuals in clinical studies. 
Available toll-free Monday through Friday from 12 pm to 6 pm Eastern Time
(Except: Federal Holidays)
Use the contact form to send your questions to a GARD Information Specialist.

Please allow 2 to 10 business days for us to respond.
ClinicalTrials.gov, an affiliate of NIH, provides current information on clinical research studies in the United States and abroad. Talk to a trusted doctor before choosing to participate in any clinical study. We recommend checking this site often and searching for studies with related terms/synonyms to improve results.
Contact a GARD Information Specialist if you need help finding more information on this rare disease or available clinical studies. Please note that GARD cannot enroll individuals in clinical studies. 
Available toll-free Monday through Friday from 12 pm to 6 pm Eastern Time
(Except: Federal Holidays)
Use the contact form to send your questions to a GARD Information Specialist.

Please allow 2 to 10 business days for us to respond.
Getting a Diagnosis

Take steps toward getting a diagnosis by working with your doctor, finding the right specialists, and coordinating medical care.

Last Updated: June 2024