Lymphedema

Common Symptoms

• Persistent swelling in an arm, leg, or other affected area
• A feeling of heaviness, tightness, or fullness in the affected limb
• Skin changes over time (thickening, firmness) in longer-standing or advanced lymphedema
• Reduced range of motion in more advanced cases
• Increased risk of skin infection in the affected area

Why It Happens

The lymphatic system normally drains excess fluid, proteins, and immune cells from body tissue back into the bloodstream. When lymph nodes or vessels are removed, damaged, or blocked — most commonly from cancer surgery (lymph node removal) or radiation therapy, but also from infection, injury, or in some cases a congenital lymphatic abnormality — fluid can accumulate in the affected area faster than the remaining lymphatic system can clear it, causing chronic swelling.

Why It Can Become Persistent

Once the lymphatic system's drainage capacity has been reduced, the underlying anatomical limitation generally doesn't reverse on its own — lymphedema is typically a chronic condition that's managed rather than cured, which is why ongoing, consistent treatment matters.

Who Commonly Gets It

Secondary lymphedema most commonly affects people who have had lymph node removal or radiation as part of cancer treatment (breast cancer treatment is a well-known cause of arm lymphedema, but it can follow treatment for other cancers too). Primary lymphedema, caused by a congenital lymphatic system abnormality, is less common and can appear at any age.

How It Is Usually Diagnosed

Lymphedema is typically diagnosed clinically based on the pattern of swelling and relevant history (such as prior lymph node surgery or radiation), sometimes supported by limb measurements or specialized imaging. Any new swelling, especially with a cancer history, should be evaluated promptly to rule out other causes, including cancer recurrence, before being attributed to lymphedema.

Traditional Treatment Options

• Complete decongestive therapy (CDT): The established standard of care, combining manual lymphatic drainage, compression bandaging/garments, exercise, and skin care, typically delivered by a certified lymphedema therapist.
• Compression garments: Ongoing use of fitted compression garments to help manage swelling long-term.
• Manual lymphatic drainage: A specialized massage technique to help move lymphatic fluid out of the affected area.
• Pneumatic compression devices: Mechanical devices that provide intermittent compression to assist fluid movement.
• Surgical options: For select, more advanced or treatment-resistant cases, lymphatic surgical procedures may be considered by a specialist.

Why Someone Might Start Looking for Another Option

Complete decongestive therapy is effective but requires ongoing commitment, and swelling and tissue firmness can persist to some degree even with consistent standard treatment, which has led researchers to explore adjunct approaches, including shockwave therapy.

Where Shockwave Therapy May Fit

The evidence here is a single small pilot study (10 patients) that added low-energy shockwave therapy to standard physical therapy for late-stage secondary lymphedema following breast cancer treatment. It found improvement in limb circumference and patient-reported tissue firmness, though the study's own primary measure (total limb volume) did not reach statistical significance, and there was no comparison group to isolate how much of the improvement came from the added shockwave therapy versus the physical therapy alone. This is early, exploratory evidence — not an established lymphedema treatment — and would only be considered as a possible adjunct to standard decongestive therapy, never as a replacement for it.

How Shockwave Treatment Works for This Area

If considered appropriate as an adjunct after evaluation and in coordination with your lymphedema therapy team, shockwave therapy would be applied to affected tissue alongside your ongoing decongestive therapy program — not as a stand-alone treatment.

What the Treatment Feels Like

Most patients describe a firm tapping or pressure sensation over the treated area; your provider will discuss what to expect based on your specific evaluation.

What Happens During Your First Visit

Your visit begins with a provider evaluation focused on your history and a physical exam relevant to your complaint. If shockwave therapy is determined to be clinically appropriate, your first treatment can typically be provided the same visit. See our What to Expect page for the full walkthrough.

Who May Not Be Appropriate

• Anyone with new or worsening swelling who has not yet been evaluated to confirm the cause, especially anyone with a cancer history who needs that swelling evaluated by their oncology team first
• Active infection (including cellulitis, which is common in lymphedema-affected limbs and requires prompt medical treatment) at or near the treatment site
• Anyone not currently engaged in standard decongestive therapy, since shockwave therapy would only be considered as an adjunct to that established care, not a substitute for it
• Active cancer treatment, without explicit clearance and coordination with the treating oncology team

This list is not exhaustive. Your provider will screen for contraindications during your evaluation.