SN instructed patient about Lymphedema disease. Lymphedema is the buildup of fluid in soft body tissues when the lymph system is damaged or blocked. When the lymph system is working as it should, lymph flows through the body and is returned to the bloodstream. Other conditions may cause the same symptoms. A doctor should be consulted if any of the following problems occur: Swelling of an arm or leg; which may include fingers and toes; a full or heavy feeling in an arm or leg; a tight feeling in the skin. Patient verbalized understanding the teaching.