Bursitis <Direct Link>

Bursitis is the painful inflammation or irritation of a , a small, fluid-filled sac that acts as a cushion and gliding surface between bones, tendons, and muscles . These sacs, of which there are over 150 in the human body, are essential for reducing friction during joint movement. Key Features and Symptoms

Symptoms typically develop in the joint where the bursa is inflamed and can vary based on whether the condition is acute (sudden) or chronic (long-term). Bursitis: Types, Treatment & Prevention - Cleveland Clinic bursitis