There are six types of JIA: Oligoarthritis: Affects four or fewer joints, typically the large ones (knees, ankles, elbows). Most common subtype of JIA. Polyarthritis: Affects five or more joints, often on both sides of the body (both knees, both wrists, etc.). May affect large and small joints. Affects about 25% of children with JIA.

Jan 16, 2023 · Juvenile idiopathic arthritis (JIA), a heterogeneous group of chronic arthritis, is the most common chronic rheumatological condition in children. There are 7 different JIA subtypes with distinct phenotypes, genetic predispositions, pathophysiology, laboratory findings, disease course, and prognosis.

Jan 27, 2025 · Juvenile idiopathic arthritis (JIA) is the most common type of arthritis affecting children. It can cause symptoms like pain, stiffness and vision issues. Treatments include medications and physical therapy. Early intervention can …

Oct 5, 2022 · There are several different subtypes of juvenile idiopathic arthritis, but the main ones are systemic, oligoarticular and polyarticular. Which type your child has depends on symptoms, the number of joints affected, and if a fever and rashes are prominent features.

Mar 28, 2025 · JIA is an umbrella term that refers to arthritis with an unknown cause, lasting longer than six weeks, in kids under the age of 16 years. The condition is divided into a three major subtypes,...

There are seven types of JIA. The three major types include: Oligoarticular JIA (arthritis in four joints or less) Polyarticular JIA (arthritis in five or more joints) Systemic JIA (arthritis plus fever, rash and large lymph nodes)

What is juvenile idiopathic arthritis? Juvenile idiopathic arthritis (JIA) is a form of arthritis in children. Arthritis causes joint swelling (inflammation) and joint stiffness. JIA is arthritis that affects 1 or more joints for at least 6 weeks in a child age 16 or younger.

Juvenile arthritis, or juvenile idiopathic arthritis (JIA), is a long-lasting, chronic disease. It is the most common form of arthritis in children. In the United States, it affects nearly 300,000 children under the age of 18. There are several types of juvenile arthritis. Nearly all of them are different from rheumatoid arthritis in adults.

Juvenile idiopathic arthritis is the most common form of juvenile arthritis and includes six types: oligoarthritis, polyarthritis, systemic, enthesitis-related, juvenile psoriatic arthritis and undifferentiated. Juvenile myositis. An inflammatory disease that causes muscle weakness.

Types of juvenile idiopathic arthritis include: Oligoarticular JIA. This form of juvenile idiopathic arthritis affects about 50 percent of children with JIA, and involves four or fewer joints. Large joints — such as the knees, ankles, or elbows — are typically affected.