Sudden swelling right very painful spreading up to elbow

Hello. Thank you for posting.

Have you injured your elbow? One cause might be, olecranon bursitis (elbow bursitis) is an inflammation of a fluid-filled sac at the tip of the ulna bone, on the back side of the elbow. A bursa is a part of your anatomy that allows two other parts to move smoothly together (outside of a joint). They’re all over the body, from the knees to the shoulders.

The olecranon bursa gets irritated and fills up with fluid easily because it’s right at the tip of the elbow just under the skin where you rest your elbow all the time. This can happen suddenly when you fall and land on the elbow, or slowly, which may take months. We cannot know. An evaluation by a doctor is needed for proper diagnosis.

Helena