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Knee pain afflicts many, though the causes and nature of the discomfort vary greatly. The pain can be localized or diffuse throughout the knee, and can range from a continual throbbing to tenderness felt only with pressure and weight bearing. Usually, diagnosis of the underlying cause requires a physical examination and medical imaging.

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1. Bursitis

Bursae are small sacs that cushion joints and reduce friction. Each knee has 11 bursae. Inflammation of one or more of these sacs is called bursitis. When the condition develops in the sacs over the kneecap or on the patella, an individual can experience knee pain. Bursitis can cause extreme pain and limit mobility. Anti-inflammatory medications can help treat bursitis, and medical attention is not always required, but symptoms such as fever could indicate a larger issue and require evaluation.

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