Arthritis is the swelling and tenderness of one or more of your joints. The main symptoms of arthritis are joint pain and stiffness, which typically worsen with age.When four or more joints are involved, the arthritis is referred to as polyarthritis. When two or three joints are involved, it is referred to as oligoarthritis. When only a single joint is involved, it is referred to as monoarthritis.
There are many types of arthritis (over 100 identified). The types of arthritis range from those related to wear and tear of cartilage (such as osteoarthritis) to those associated with inflammation resulting from a misdirected immune system (such as rheumatoid arthritis). While osteoarthritis and rheumatoid arthritis are common types of arthritis, there are many other common and uncommon types of arthritis. Other types of inflammatory arthritis include
- psoriatic arthritis,
- ankylosing spondylitis, and
- reactive arthritis.
- Types of infectious arthritis include septic arthritis and Lyme arthritis.
Self-limited forms of arthritis can occur in association with virus infections.
Symptoms and signs
symptoms of arthritis include pain and limited function of joints. Joint inflammation from arthritis is characterized by joint stiffness, swelling, redness, pain, and warmth.