WHAT IS ARTHRITIS
Chapter 1; Introduction
Arthritis is a term coined from two Greek words, athro (joint) and itis (inflammation). It is a condition whose main presenting symptoms are pain (arthralgia), stiffness and swelling in the joints. Arthritis can affect only one joint (mono articular) or many joints (poly articular) in a person.
The presence of pain and swelling in a joint is a manifestation of an underlying condition.
Prevalence of arthritis
The prevalence of arthritis may vary from country to country. It is hard to come up with definite figures but various studies have provided estimates. An estimated 40 million Americans had arthritis and the number is expected to increase to 59.4 million by the year 2020 (18% increase). This is just an example and figures vary with country.