1. Health

Discuss in my forum

What Is Juvenile Arthritis?

By , About.com Guide

Updated April 22, 2013

About.com Health's Disease and Condition content is reviewed by the Medical Review Board

Definition: Juvenile arthritis generally refers to a childhood form of inflammatory arthritis, affecting children under the age of sixteen. Children can develop almost all types of arthritis that affect adults, but the most common type that affects children is juvenile rheumatoid arthritis (JRA). Although, JRA and adult onset RA differ in some characteristics, there are similarities. The course of rheumatoid arthritis is typically different in children and adults though.

Other names used for juvenile arthritis are juvenile chronic arthritis, juvenile idippathic arthritis, and Still's disease. These names are somewhat misnomers. Juvenile chronic arthritis is a misnomer since juvenile arthritis is not always chronic. Still's disease is a name which should be used for a very specific type of childhood arthritis.

In juvenile arthritis, the inflammation can cause redness redness, swelling, warmth, and soreness in the joints, although many children do not complain of joint pain. Any joint can be affected and inflammation may limit the mobility of affected joints. One type of juvenile arthritis can also affect internal organs.

Doctors classify juvenile arthritis into three types based on the number of joints involved, the symptoms, and the presence or absence of certain antibodies found by a blood test. These classifications help the doctor determine how the disease will progress and whether the internal organs or skin is affected.

The three types are:

  • Pauciarticular
  • Polyarticular
  • Systemic

Sources:

Primer on the Rheumatic Diseases. Arthritis Foundation. Thirteenth edition.

Pronunciation: ju-ven-i-ul arth-rite-is
Also Known As: JRA, juvenile rheumatoid arthritis, childhood arthritis, Still's disease, juvenile chronic arthritis
Common Misspellings: juveline, rhuematoid, rheumatiod
Examples:
My sister was diagnosed at age 11 with juvenile arthritis.

©2013 About.com. All rights reserved.

We comply with the HONcode standard
for trustworthy health
information: verify here.