A compression sleeve for lymphedema is a tube-shaped elasticized garment that a person wears on the arm. By putting pressure on the arm, it keeps lymph flowing through the lymphatic system.

Lymph is a colorless fluid containing white blood cells. It bathes tissues and flows through the lymphatic system into the bloodstream. Lymphedema is a condition in which lymph builds up in the tissues and causes swelling.

Lymphedema may result from cancer or cancer treatment. There is no cure for lymphedema, but a compression sleeve can help manage the symptoms.

In this article, we explain when a person should wear a compression sleeve for lymphedema. We also look at the differences between daytime and nighttime sleeves, their costs, and whether insurance will pay for them.