Self-Management for Head and Neck Lymphedema and Fibrosis [PROMISE Trial]

This trial (called the PROMISE Trial) is testing a self-management program for people with swelling and scarring (lymphedema and fibrosis) in the head and neck area after treatment for head and neck cancer, especially for those who cannot easily access in-person therapy. **You may be eligible if:** - You are over 18 years old - You have completed your main cancer treatment for head and neck cancer with no signs of cancer remaining - You have completed initial lymphedema therapy but still face barriers to accessing it - You have a history of lymphedema in the face/neck, with or without scarring - You can read and understand English - You have a device (smartphone, tablet, or computer) with internet access at home **You may NOT be eligible if:** - Your cancer has come back or spread - You have another active cancer - You have an active infection, acute heart failure, or acute kidney failure - You have swelling in the lungs (cardiac or pulmonary edema) - You have a sensitive or severely blocked carotid artery, uncontrolled blood pressure, or venous blood clots - You are pregnant Talk to your doctor to see if this trial is right for you.