Lymphedema: A Comprehensive Guide
Medically reviewed by Andre Stone | MD, University of Pittsburgh School of Medicine on August 24th, 2026.
Published on April 5th, 2026. Updated on August 28th, 2026.
Key Takeaways
Lymphedema is chronic swelling caused by a damaged or blocked lymphatic system that can't drain fluid properly
Primary lymphedema is caused by inherited or developmental problems in the lymphatic system. It may be present at birth or first appear later in life. Secondary lymphedema develops after the lymphatic system is damaged by conditions such as injury, infection, or cancer treatment.
Early signs include swelling, heaviness, and tight-feeling skin in arms or legs
Treatment focuses on managing symptoms through compression, exercise, and proper skin care
With proper management, most people with lymphedema can live active, fulfilling lives
Overview
Lymphedema is a long-term condition that causes swelling in your body's tissues. This happens when your lymphatic system can't drain lymph fluid properly. The lymphatic system is like your body's drainage network. It helps fight infection and removes extra fluid from your tissues.
When this system gets damaged or blocked, lymph fluid builds up. This causes swelling, usually in your arms or legs. The swelling can be mild at first but often gets worse over time without treatment.
About 10 million Americans have lymphedema. It affects people of all ages, from babies to older adults. Women are more likely to develop it than men, especially after cancer treatment. While there's no cure, proper treatment can help control symptoms and prevent complications.
The condition can make daily activities harder. Your arm or leg may feel heavy or uncomfortable. But with the right help and treatment, you can manage lymphedema and stay active.
Symptoms & Signs
Lymphedema symptoms usually develop slowly over time. The swelling may come and go at first, but it typically becomes constant without treatment.
Primary Symptoms
Swelling in arms or legs - Usually starts in hands or feet and moves up the limb
Feeling of heaviness or fullness - Your affected limb may feel tight or uncomfortable
Restricted range of motion - Joints may feel stiff or hard to move normally
Recurring infections - Skin infections happen more often in the affected area
Hardening and thickening of skin - Over time, skin becomes firm and difficult to pinch
Many people notice their clothes or jewelry fit tighter on the swollen side. Some see that one arm or leg looks bigger than the other. You might also notice that the swelling gets worse later in the day or after activity.
Some skin changes, such as thickening, may develop slowly. New redness or warmth—especially with increased swelling, pain, or fever—may indicate an infection and should be assessed promptly by a healthcare professional. You might see small bumps or ridges on your skin that look different from normal.
When to Seek Care
Seek urgent medical care for red streaks, fever, rapidly increasing swelling, or spreading redness, as these may indicate a serious infection such as cellulitis. Also see a doctor if you notice any swelling that doesn't go down with rest or elevation.
Call your doctor if the swelling spreads to a new area. Report any signs of skin breakdown or open sores. Tell your doctor if your compression garments no longer fit properly due to increased swelling.
When to Seek Immediate Care
Seek urgent medical care for sudden severe swelling, high fever, spreading redness or red streaks, or other signs of serious infection. Sudden swelling in one limb—especially with pain, warmth, chest pain, or shortness of breath—also needs urgent evaluation because it may be caused by a blood clot.
Causes & Risk Factors
Lymphedema has two main types: primary and secondary. Primary lymphedema results from inherited or developmental lymphatic system problems and may appear at birth or later in life. Secondary lymphedema develops when something damages your lymphatic system later in life.
Cancer treatment is the most common cause of secondary lymphedema in developed countries. Surgery that removes or damages lymph nodes and radiation therapy can disrupt lymph drainage. Some cancer medicines and treatment-related factors may also increase the risk of lymphedema. Understanding the differences between similar conditions helps doctors make accurate diagnoses.
Infections, injuries, and certain medical procedures can also cause lymphedema. In developing countries, parasitic infections are a leading cause. The condition can develop immediately after surgery or appear months or even years later.
Some people develop lymphedema after burns or severe accidents. Major injuries can scar lymph vessels and stop them from working properly. Even small injuries can sometimes trigger lymphedema in people at risk.
Infections like cellulitis can damage your lymph system over time. If you get the same infection multiple times, your risk goes up. In regions where lymphatic filariasis occurs, mosquito-borne parasitic infection can cause lymphedema. Ask a healthcare professional about appropriate precautions if you will travel to an affected area.
Age
Risk increases with age, especially after 40
Genetics
Family history of lymphedema increases risk
Lifestyle
Obesity and lack of movement worsen symptoms
Other Conditions
Cancer treatments that affect lymph nodes or lymph vessels can increase the risk of lymphedema. Heart and kidney disease can also cause swelling, but that swelling may have a different cause and requires medical evaluation.
Continue Learning
Related articles you might find helpful
Diagnosis
Medical History & Physical Examination
Your doctor will ask about your symptoms, family history, and any previous surgeries or medical treatments. They'll examine the affected area, measuring the size of your limbs and checking your skin. The doctor will also feel for lymph nodes and assess your range of motion.
During the physical exam, your doctor may press on the swollen area to see if it leaves an indentation. They'll also look for signs of infection and check the texture of your skin.
Your doctor will compare both arms or both legs to see the difference. They may ask you to keep a swelling diary before your visit. This helps them understand how your swelling changes throughout the day.
Diagnostic Testing
Lymphoscintigraphy - A special scan that shows how lymph fluid moves through your system
CT or MRI scans - These create detailed pictures to rule out other causes of swelling
Ultrasound - Uses sound waves to check for blood clots that might cause similar symptoms
Bioimpedance spectroscopy - Measures electrical currents to detect fluid buildup in tissues
Most doctors diagnose lymphedema based on your medical history and physical exam. Imaging may be used when the diagnosis is uncertain, to evaluate lymphatic function, or to look for other causes of swelling. Some tests are simple and noninvasive, while others involve injections or take more time.
Get Skin Care Relief Today
Learn MoreTreatment Options
Treatment for lymphedema focuses on reducing swelling and preventing complications. The goal is to move lymph fluid out of the affected area and keep it from building up again.
Conservative Treatments
Complete decongestive therapy (CDT) - Combines manual drainage, compression, exercise, and skin care
Compression garments - Special sleeves or stockings that apply gentle, steady pressure to move fluid
Manual lymphatic drainage - A specialized massage technique performed by trained therapists
Exercise programs - Gentle movements that help pump lymph fluid through your system
Most people start with these basic treatments first. These treatments help many people, but they should be selected and fitted with guidance from a trained healthcare professional. Compression and manual drainage may need to be modified or avoided in some people, and poorly fitting compression can cause skin or circulation problems. Your doctor or therapist will teach you how to do them at home.
Starting treatment early gives you the best results. The sooner you begin, the easier it is to control swelling. Many people see improvement within weeks of starting treatment.
Advanced Treatments
Pneumatic compression devices - Machines that inflate and deflate to massage the affected limb
Surgical procedures - Operations to create new drainage paths or remove excess tissue when conservative treatment fails
These advanced options are used when basic treatments don't help enough. Surgery is usually only done after trying other treatments for a long time. Talk to your doctor about whether advanced treatment might help you.
Living with the Condition
Daily Management Strategies
Keep your skin clean and moisturized to prevent infections. Avoid cuts, burns, and insect bites on the affected limb. Wear your compression garments as prescribed by your doctor. Watch for changes in swelling and report them to your healthcare team. Proper lifestyle modifications can significantly improve your quality of life.
Develop a daily routine for your lymphedema care. Set reminders to wear your compression garments at the right times. Keep all appointments with your therapist and doctor so they can monitor your progress.
Try to stay positive about managing your condition. Many people find that support groups help them feel less alone. Talking with others who have lymphedema can give you helpful tips and encouragement.
Exercise & Movement
Low-impact activities like swimming, walking, and gentle stretching are usually safe and helpful. These exercises help move lymph fluid through your system. Always wear compression garments during exercise if your doctor recommends them. Avoid activities that might injure the affected limb or cause overexertion.
Start slowly with any new exercise program. Talk to your doctor before starting a new activity. You may need to adjust your routine based on how your body responds.
Stay as active as possible within your limits. Movement helps prevent your swelling from getting worse. Being active also helps you feel better and keeps your body healthy.
Prevention
Protect your skin from cuts, burns, and infections through careful daily care
Maintain a healthy weight to reduce stress on your lymphatic system
Exercise regularly with gentle, low-impact activities approved by your doctor
Follow all post-surgery care instructions if you've had lymph nodes removed
Seek prompt treatment for any skin injuries or signs of infection in the at-risk area
Use sunscreen to protect your skin from burns on the affected limb. Wear long sleeves when gardening or doing yard work to prevent scratches. Keep your nails trimmed short and smooth to avoid accidental skin damage.
Elevate your arm or leg when sitting down to help with swelling. Use a pillow to prop it up comfortably. Try to avoid sitting or standing in one position for too long without moving.
Stay aware of your swelling patterns and what makes it worse. Keep track of activities that seem to increase swelling. Use this information to plan your days and prevent problems before they happen.
Frequently Asked Questions
There's currently no cure for lymphedema, but it can be effectively managed. With proper treatment, most people can control their symptoms and live normal lives. Early treatment works best, so don't delay getting help if you notice swelling.
Without treatment, lymphedema usually gets worse gradually. However, with proper management including compression therapy and exercise, many people can prevent progression. Some even see improvement in their symptoms.
Yes, you can travel with lymphedema, but you need to take precautions. If compression garments are already part of your treatment plan, ask your healthcare professional whether and how to use them during travel. During long trips, change position and move around regularly when it is safe to do so. Talk to your doctor before traveling to get specific advice for your situation.
Lymphedema itself usually doesn't cause severe pain, but you may feel heaviness, tightness, or achiness. Some people experience discomfort from the pressure of swelling. Pain management strategies can help if needed.
Yes, children can have lymphedema, especially primary lymphedema that's present from birth. Secondary lymphedema can also develop in children who've had cancer treatment or certain infections. Early intervention is important for the best outcomes.
Still have questions?
Consult with a healthcare professional for personalized advice.