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Disease Profile

Enthesitis-related juvenile idiopathic arthritis

Prevalence estimates on Rare Medical Network websites are calculated based on data available from numerous sources, including US and European government statistics, the NIH, Orphanet, and published epidemiologic studies. Rare disease population data is recognized to be highly variable, and based on a wide variety of source data and methodologies, so the prevalence data on this site should be assumed to be estimated and cannot be considered to be absolutely correct.

1-9 / 100 000

US Estimated

Europe Estimated

Age of onset






Autosomal dominant A pathogenic variant in only one gene copy in each cell is sufficient to cause an autosomal dominant disease.


Autosomal recessive Pathogenic variants in both copies of each gene of the chromosome are needed to cause an autosomal recessive disease and observe the mutant phenotype.


dominant X-linked dominant inheritance, sometimes referred to as X-linked dominance, is a mode of genetic inheritance by which a dominant gene is carried on the X chromosome.


recessive Pathogenic variants in both copies of a gene on the X chromosome cause an X-linked recessive disorder.


Mitochondrial or multigenic Mitochondrial genetic disorders can be caused by changes (mutations) in either the mitochondrial DNA or nuclear DNA that lead to dysfunction of the mitochondria and inadequate production of energy.


Multigenic or multifactor Inheritance involving many factors, of which at least one is genetic but none is of overwhelming importance, as in the causation of a disease by multiple genetic and environmental factors.


Not applicable


Other names (AKA)

Juvenile enthesitis-related arthritis; Enthesitis related arthritis, juvenile; Enthesitis-related arthritis;


Eye diseases; Lung Diseases; Musculoskeletal Diseases


Enthesitis-related juvenile idiopathic arthritis is a subtype of juvenile idiopathic arthritis that is characterized by both arthritis and inflammation of an enthesitis site (the point at which a ligament, tendon, or joint capsule attaches to the bone). Signs and symptoms generally develop in late childhood or early adolescence and include pain, tenderness, and swelling in joints and at the enthesis. The knee and the back of the ankle (at the Achilles tendon) are the most commonly affected parts of the body. The underlying cause of enthesitis-related juvenile idiopathic arthritis is currently unknown (idiopathic). It is very rare for more than one member of a family to have juvenile arthritis; however, research suggests that having a family member with juvenile arthritis or any autoimmune disease may increase the risk of having juvenile arthritis, in general. Treatment usually involves different types of medications to help manage symptoms and/or physical therapy.[1][2]


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
Learn More:
80%-99% of people have these symptoms
Anterior uveitis
Elevated C-reactive protein level
Elevated erythrocyte sedimentation rate
High ESR
Joint swelling
Juvenile rheumatoid arthritis
Sacroiliac arthritis
30%-79% of people have these symptoms
Cartilage destruction
Dental malocclusion
Bad bite
Malalignment of upper and lower dental arches
Misalignment of upper and lower dental arches

[ more ]



FDA-Approved Treatments

The medication(s) listed below have been approved by the Food and Drug Administration (FDA) as orphan products for treatment of this condition. Learn more orphan products.

  • Methotrexate oral solution(Brand name: Xatmep) Manufactured by Silvergate Pharmaeuticals, Inc.
    FDA-approved indication: April 2017, methotrexate oral solution (Xatmep) was approved for the treatment of oligoarticular juvenile idiopathic arthritis (persistent oligoarthritis, psoriatic juvenile idiopathic arthritis, enthesitis-related arthritis, or undifferentiated arthritis) and polyarticular juvenile idiopathic arthritis in children 0 through 16 years of age.
    National Library of Medicine Drug Information Portal


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.

Organizations Supporting this Disease

    Learn more

    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

    • The Cincinnati Children's Hospital has an information page on Enthesitis-related juvenile idiopathic arthritis. Click on the link to view this information page.
    • Genetics Home Reference (GHR) contains information on Enthesitis-related juvenile idiopathic arthritis. This website is maintained by the National Library of Medicine.
    • The National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS) support research into the causes, treatment, and prevention of arthritis and musculoskeletal and skin diseases, the training of basic and clinical scientists to carry out this research, and the dissemination of information on research progress in these diseases. Click on the link to view information on this topic.

      In-Depth Information

      • 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.
      • Orphanet is a European reference portal for information on rare diseases and orphan drugs. Access to this database is free of charge.
      • PubMed is a searchable database of medical literature and lists journal articles that discuss Enthesitis-related juvenile idiopathic arthritis. Click on the link to view a sample search on this topic.


        1. David D Sherry, MD. Juvenile Idiopathic Arthritis. Medscape Reference. September 2015; https://emedicine.medscape.com/article/1007276-overview.
        2. Juvenile Arthritis. National Institute of Arthritis and Musculoskeletal and Skin Diseases. June 2015; https://www.niams.nih.gov/Health_Info/Juv_Arthritis/default.asp#2.