Disease at a Glance

Summary
Hypereosinophilic syndrome (HES) refers to a rare group of conditions that are associated with persistent eosinophilia with evidence of organ involvement. Signs and symptoms vary significantly based on which parts of the body are affected. Although any organ system can be involved in HES, the heart, central nervous system, skin, and respiratory tract are the most commonly affected. The condition was originally thought to be "idiopathic" or of unknown cause. However, recent advances in diagnostic testing have allowed a cause to be identified in approximately a quarter of cases.

About Hypereosinophilic syndrome

Many rare diseases have limited information. Currently GARD is able to provide the following information for Hypereosinophilic syndrome:

  • Population Estimate:In the US, there are less than 50,000 with this disease.
  • Symptoms:May start to appear at any time in life.
  • Experts:GARD is not currently aware of a specialist directory for this condition.
  • Organizations:GARD is not aware of organizations specific to this condition. 
  • Categories:CancerHematologic Disease
When do symptoms of this disease begin?
The most common ages for symptoms of a disease to begin is called age of onset. Age of onset can vary for different diseases and may be used by a doctor to determine the diagnosis. For some diseases, symptoms may begin in a single age range or several age ranges. For other diseases, symptoms may begin any time during a person's life.
Prenatal Selected
Before Birth
Newborn Selected
Birth-4 weeks
Infant Selected
1-23 months
Child Selected
2-11 years
Adolescent Selected
12-18 years
Adult Selected
19-65 years
Older Adult Selected
65+ years
Symptoms may start to appear at any time in life.

Symptoms

This information is currently in development. 

Causes

This section is currently in development. 

Advocacy and Support Groups

How can a patient organization be helpful?

Patient advocacy and support organizations offer many valuable services and often drive the research and development of treatments for their disease(s). Because these organizations include the life experiences of many different people who have a specific disease, they may best understand the resources needed by those in their community. Although missions of organizations may differ, services may include, but are not limited to:
 

  • Ways to connect to others and share personal stories
  • Easy-to-read information
  • Latest treatment and research information
  • Lists of specialists or specialty centers
  • Financial aid and travel resources
Please note: GARD provides the names of patient organizations for informational purposes only and not as an endorsement of their services. Please contact the organization directly if you have questions about the information or resources they provide.

What do disease-specific organizations do?

Some organizations build a community of patients and families impacted by a specific disease or group of related diseases. These organizations usually have more disease-specific information and services, including helping new members find others who have the same disease.

What do organizations that focus on a medical condition do?

Some organizations build a community of patients and families impacted by a medical condition, like epilepsy, or related conditions, like heart problems, that may also be a symptom in other diseases. These organizations usually have information and services focused more on the medical condition(s), but may also have information about associated diseases.

What do umbrella organizations do?

Rare disease umbrella organizations focus on improving the lives of all those impacted by rare diseases through education and advocacy efforts. Umbrella organizations provide a range of services for patients, families, and disease-specific organizations.

Patient Organizations

4 Organizations

Organization Name

Organization Type

Service

Country

Language

EveryLife Foundation for Rare Diseases
https://everylifefoundation.org/
Umbrella

Hypereosinophilic Syndrome

Service

Information

Country

United States

Language

English

Spanish

Umbrella

Hypereosinophilic Syndrome

Service

Information

Country

United States

Language

English

Umbrella

Hypereosinophilic Syndrome

Service

Information

Country

United States

Language

English

National Organization for Rare Disorders
https://rarediseases.org/
Umbrella

Hypereosinophilic Syndrome

Service

Information

Research

Country

United States

Language

English

Spanish

4 Organizations

Research

Why is Research Important for Rare Diseases?

Research increases what we know about rare diseases so that people can get a diagnosis more quickly and can know what to expect. Research also helps doctors better understand how well a treatment works and can lead to new treatment discoveries. It may even help improve diagnosis and treatment of more common diseases.

How do you find the right clinical study?

  • Discuss the clinical study with a trusted medical provider before enrolling
  • Review the "Study Description," which discusses the purpose of the study, and "Eligibility Criteria," which lists who can and cannot participate in the study
  • Work with the research coordinator to review the written informed consent, including the risks and benefits of the study
  • Inquire about the specific treatments and procedures, location of the study, number of visits, and time obligation
  • Determine whether health insurance is required and whether there are costs to the participant for the medical care, travel, and lodging
  • Ask questions. Remember, it is okay to decide not to participate in research

For More Information

How do you find the right clinical study?

  • Discuss the clinical study with a trusted medical provider before enrolling
  • Review the "Study Description," which discusses the purpose of the study, and "Eligibility Criteria," which lists who can and cannot participate in the study
  • Work with the research coordinator to review the written informed consent, including the risks and benefits of the study
  • Inquire about the specific treatments and procedures, location of the study, number of visits, and time obligation
  • Determine whether health insurance is required and whether there are costs to the participant for the medical care, travel, and lodging
  • Ask questions. Remember, it is okay to decide not to participate in research

For More Information

ClinicalTrials.gov 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. Check this site often for new trials that become available.
Please contact GARD if you need help. Our Information Specialists can help you find a clinical trial and answer questions about rare diseases. GARD cannot enroll individuals in clinical trials.
ClinicalTrials.gov 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. Check this site often for new trials that become available.
Please contact GARD if you need help. Our Information Specialists can help you find a clinical trial and answer questions about rare diseases. GARD cannot enroll individuals in clinical trials.

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

Last Updated: February 2023