Arthritis refers to a group of conditions characterized by inflammation and pain in the joints. It is a common condition that can affect people of all ages, although it is more prevalent among older adults. Here's a brief overview of arthritis:

Types of Arthritis: There are several types of arthritis, but the two most common forms are:

Osteoarthritis (OA): This is the most prevalent form of arthritis. It occurs when the protective cartilage that cushions the ends of bones within a joint gradually wears down over time. Osteoarthritis commonly affects weight-bearing joints such as the knees, hips, and spine.

Rheumatoid arthritis (RA): This is an autoimmune disease where the immune system mistakenly attacks the lining of the joints, resulting in inflammation and joint damage. Rheumatoid arthritis can affect multiple joints throughout the body, and it may also involve other organs and systems.

Symptoms: 

The symptoms of arthritis can vary depending on the type and severity of the condition, but common signs and symptoms include:

• Joint pain, tenderness, and swelling.

• Stiffness, especially in the morning or after periods of inactivity.

• Reduced range of motion and difficulty with joint movement.

• Warmth or redness around the affected joints.

• Weakness or instability in the joints.

• Fatigue and a general feeling of malaise.