Condition guide · Lymphedema
Lymphedema: symptoms, causes, and how it's managed
Lymphedema is long-term swelling — most often in an arm or leg — that happens when lymph fluid can't drain normally and builds up in the tissues. It's a chronic condition, but with the right day-to-day management most people keep it well controlled.
Educational overview drawn from public health sources (e.g., NIH/National Cancer Institute, Mayo Clinic).Educational information, not medical advice — talk with your physician about what's right for you.
What is lymphedema?
Your lymphatic system moves a fluid called lymph through a network of vessels and nodes, clearing waste and supporting your immune system. When that drainage is blocked or damaged, fluid pools in the soft tissue and causes swelling — that's lymphedema.
It usually affects one arm or one leg, though it can involve both limbs or other areas. Left unmanaged it tends to progress, so early, consistent care matters.
Common symptoms
- Swelling in part or all of an arm or leg, including fingers or toes
- A feeling of heaviness, tightness, or aching in the limb
- Reduced range of motion, or clothing/jewelry feeling tight
- Skin changes over time — thickening or hardening (fibrosis)
- Recurring skin infections in the affected area
What causes it?
Primary lymphedema is present from a problem in how the lymphatic system formed. Secondary lymphedema — the more common kind — develops after the system is damaged.
The most frequent cause in the U.S. is cancer treatment: surgery that removes lymph nodes, or radiation. Infection, injury, and some chronic conditions can also lead to it.
How lymphedema is managed
There's no cure, but the standard approach — often called complete decongestive therapy — keeps swelling down and protects the skin. A certified lymphedema therapist typically guides the plan. It usually combines:
- Compression — gradient compression garments and, at times, bandaging, to keep fluid from re-accumulating (a mainstay of daily care)
- Manual lymphatic drainage — a specialized, gentle massage technique
- Exercise and movement to help fluid drain
- Careful skin care to lower infection risk
When to talk to a doctor
If you notice persistent swelling, tightness, or heaviness in a limb — especially after cancer treatment, surgery, or injury — see your provider. Early diagnosis makes the condition much easier to manage, and a provider's diagnosis is also what opens the door to Medicare coverage for compression garments.
Have a lymphedema diagnosis and need compression garments? Check your Medicare coverage.
Check your Medicare coverage in one step, or talk to an intake specialist — no cost or commitment to check.
Common questions
Does compression cure lymphedema?+
No — lymphedema is a chronic condition and compression is part of managing it, not a cure. Consistent compression, along with the rest of a therapist-guided plan, helps keep swelling controlled. Talk with your provider about what's right for you.
Are compression garments covered by insurance?+
Since 2024, Medicare Part B covers compression garments for a diagnosed case of lymphedema. See our coverage page for the criteria and limits, or check your eligibility below.
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