and other rheumatic diseases are often mistakenly associated
with old age, because osteoarthritis (the most common form
of arthritis) occurs more often among older persons. However,
arthritis affects people of all ages. In fact, more than
half of those affected with arthritis are under the age
The average age at onset of rheumatoid arthritis is between
the ages of 20 and 45 years. Juvenile arthritis refers to
the different types of arthritis that occur in children.
Nearly 300,000 children suffer from some form of arthritis.