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Complete decongestive therapy, explained
Complete decongestive therapy — CDT — is the standard, conservative treatment for lymphedema. There is no cure for lymphedema, but CDT can reduce swelling, protect your skin, and improve how the limb feels and moves. It is delivered by a certified lymphedema therapist, and it combines four parts that work together. If you haven’t yet, read what is lymphedema? first.
The four parts
What CDT includes
Manual lymph drainage
A gentle, hands-on technique with light, directed strokes that encourage lymph fluid to move toward areas where it can drain. It is not deep-tissue massage — deep pressure can overwhelm impaired lymph vessels. This is the key difference between a certified lymphedema therapist and general lymphatic massage.
Compression
Short-stretch bandaging during the intensive phase, then fitted compression garments to maintain results. Compression supports the drainage work and keeps fluid from collecting again between sessions.
Therapeutic exercise
Targeted movement, usually done while wearing compression. Muscle activity helps pump lymph through the vessels. Your program is built for your strength, mobility, and any other conditions you have — it is not a generic workout plan.
Skin and nail care
Careful skin care lowers infection risk, including cellulitis — one of the most common and serious complications of lymphedema. See our full guide to skin care and cellulitis.
Some plans also include pneumatic compression (a pump device) where appropriate. Your therapist will tell you if it fits your condition — a pump supports CDT, it does not replace it.
The two phases
First we reduce, then you maintain
Phase 1 — Intensive
The goal is to reduce swelling as much as possible. You see your therapist frequently over a concentrated period for drainage, bandaging, exercise, and skin care, and your limb is measured as it changes.
How long this phase lasts depends on your stage and how your tissue responds. Your therapist maps it out after your evaluation — there is no honest one-size-fits-all timeline.
Phase 2 — Maintenance
The goal shifts to keeping your results. You move into fitted compression garments and a home program — the daily self-care routine you learned in Phase 1.
Phase 2 is not “treatment is over.” It is the part that protects everything Phase 1 achieved, for the long term.
Common questions
Before you start CDT
Does CDT hurt?
Manual lymph drainage is gentle and should not hurt. Compression can feel snug, especially at first, and your therapist adjusts it as your limb changes size.
Will CDT make the swelling go away for good?
CDT can significantly reduce swelling and improve function and comfort. Because the lymphatic system itself is impaired, ongoing maintenance is what keeps those results — which is exactly what Phase 2 is for.
Can I just do one part of it?
The parts work together. Drainage without compression lets fluid return; compression without skin care leaves infection risk unaddressed. If a full program feels like a lot, talk to your therapist about how it will be sequenced for you.
Educational information only — not medical advice for your specific situation.