A cortisone shot delivers targeted treatment for pain and inflammation. It is usually injected into a joint, but other sites include tendons and the bursa surrounding the joint. Cortisone shots usually treat various types of arthritis, tendonitis, and bursitis, but they can be effective against other conditions, too.
Cortisone is a corticosteroid — synthetic drugs that resemble cortisol, a natural hormone produced by the adrenal glands. Cortisol affects many processes in the body, including blood sugar levels, metabolism, memory formation, and inflammation. Because cortisone is a synthetic version of cortisol, it has similar effects.
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