The lymphatic system is made up of lymph vessels and lymph nodes, which carry a fluid called lymph. Lymph consists of waste from the cells. This fluid drains through lymph vessels under the skin to nearby lymph nodes. Lymph nodes filter waste products from the cells. They kill any bacteria present before returning the lymph fluid to your blood circulation.
When the lymph vessels are damaged, lymph fluid can't drain from tissues. This causes the lymph fluid to back up, causing swelling. This most often affects the arms or legs. Signs of lymphedema include heaviness, stiffness, or aching in an arm or leg. The limb may swell. The skin might look red. Shoes and rings may feel tight. Ankles and wrists might become less flexible.
The most common cause of damage to the lymph system is surgery or radiation for breast or testicular cancer. Other causes include repeated skin infections (cellulitis), burns, or injury to the arms or legs. It can take many years for symptoms of lymphedema to appear. Once present, lymphedema can become an ongoing (chronic) condition. This means the problem can be managed but not cured.
Treatment often includes using compression garments, getting massage, and doing special exercises. Talk with your doctor about these treatments and the best treatment plan for you. Ask your doctor about a referral to a certified lymphedema therapist. This is a provider who specializes in lymphedema teaching and management.