1.   Each infection can lead to scar tissue that further damages lymph vessels, setting the stage for yet more lymphedema and cellulitis.

2.   Eventually HIV travels through lymph vessels to lymph nodes and the rest of the lymph system.

3.   Once lymphedema has progressed to fibrosis, a hardening of the tissue, pumps may actually damage still-healthy lymph vessels.

4.   So the trick is getting the fluid that is stuck in a limb past the damaged lymph vessels and back into circulation.

5.   Part of the immune system, lymph vessels channel important fluids around the body.