If you have lymphedema, protecting the affected limb from injury, infection, and anything that worsens swelling is essential to managing the condition. Many of the things you should avoid come down to two principles: don’t create opportunities for bacteria to enter compromised skin, and don’t restrict or overload a lymphatic system that’s already struggling to drain fluid.
Tight Clothing and Jewelry
Anything that squeezes the affected area can act like a partial tourniquet, blocking the limited lymphatic drainage you have and trapping fluid. This includes elastic waistbands, tight bra straps, socks with constrictive bands, and rings or bracelets on a swollen arm or hand. The concern is that these items increase pressure in the limb, which forces more fluid into tissues that can’t move it out efficiently.
Wear loose jewelry and clothes without tight bands or elastic on the affected side. Bras should be supportive but not tight. If you have arm lymphedema, carry your handbag on the unaffected arm, since a strap digging into a swollen forearm or shoulder creates the same constricting problem. Compression garments prescribed by your therapist are the exception here. Those are designed to apply even, graduated pressure that assists drainage rather than blocking it.
Skin Injuries, Even Small Ones
Lymphedema makes the affected limb significantly more vulnerable to infection because the sluggish lymphatic system can’t fight bacteria as effectively. Even a tiny cut, scratch, or insect bite can become a gateway for cellulitis, a skin infection that causes rapid swelling, redness, warmth, pain, and sometimes fever. Cellulitis is one of the strongest risk factors for making lymphedema permanently worse.
The practical list of precautions is longer than most people expect:
- Shaving: Use an electric razor on affected areas to reduce the risk of nicks.
- Manicures and pedicures: Never cut cuticles. Gently push them back instead. Use an emery board on nails weekly rather than clippers, which carry a higher risk of cutting surrounding skin.
- Sewing and gardening: Wear a thimble when sewing and gloves when gardening or doing housework that could cause scratches.
- Bug bites and sunburn: Apply insect repellent and sunscreen with SPF 30 or higher before going outside. Both bites and burns damage skin and invite infection.
- Going barefoot: If you have lower-limb lymphedema, never walk barefoot, especially outdoors. Even a small puncture or scrape on the sole of your foot can lead to a serious infection.
Moisturize the skin on the affected limb daily to prevent cracking and dryness, which also create entry points for bacteria. Pay special attention to the spaces between your toes if your feet are involved, and watch for itchy, moist patches there, which could signal a fungal infection worth treating promptly.
Heat Exposure
High temperatures cause blood vessels to dilate, which increases the amount of fluid pushed into tissues. A healthy lymphatic system handles this easily, but a compromised one can’t keep up, leading to more swelling. Avoid hot baths, saunas, steam rooms, and prolonged direct sun exposure on the affected limb. Ice packs on the opposite extreme can also be problematic, so stick to moderate temperatures when possible.
Sitting or Standing Still Too Long
Your muscles act as a pump for the lymphatic system. When you sit or stand in one position for extended periods, that pump stops working and fluid pools. Change your sitting position at least every 30 minutes, and avoid crossing your legs, which adds compression to an already sluggish system. On long car rides or at a desk, periodic movement makes a real difference.
Wrong Footwear for Lower-Limb Lymphedema
If lymphedema affects your feet or legs, shoe choices matter more than you might think. Swollen feet change shape throughout the day, and shoes that felt fine in the morning can become dangerously tight by afternoon, causing rubbing, blisters, and infection risk.
Look for shoes with adjustable fastenings like laces or Velcro so you can loosen them as swelling changes. Leave about half an inch of space between your longest toe and the end of the shoe. Heels should be no higher than about an inch and a quarter, with a wide base for stability. The sole should be thick enough to protect against sharp objects and provide good cushioning.
Avoid flip-flops, slip-on shoes, and mule-style slippers. They offer no support, increase fall risk, and leave skin exposed to dirt and injury. Sandals with thin straps across the top of the foot are particularly problematic because the straps can dig into swollen tissue, causing fluid to bulge on either side. Never cut or modify shoes to force them over swollen feet, as this just redistributes the pressure unevenly. Even slippers should be closed-toe and supportive around the heel.
Excessive Salt, Alcohol, and Weight Gain
Salt causes your body to retain fluid, which directly increases the volume of fluid your lymphatic system has to move. The general recommendation is to keep sodium under 2,300 mg per day, or under 1,500 mg if you also have heart disease, diabetes, or kidney disease. That means reading labels carefully, since processed and restaurant foods often contain far more sodium than most people realize.
Alcohol and caffeinated beverages are also worth limiting, as both can affect fluid balance. A diet rich in lean protein, whole grains, fruits, and vegetables supports overall lymphatic health. Maintaining a healthy weight is one of the most consistently supported recommendations in lymphedema management. A BMI of 25 or above at the time of cancer treatment is a significant independent risk factor for developing lymphedema, and excess weight continues to strain the lymphatic system after it develops.
Lifting Too Much, Too Fast
For years, people with lymphedema were told to avoid lifting anything heavy with the affected limb. That advice has been revised. Research from the Physical Activity and Lymphedema (PAL) trial found that slowly progressive strength training is not only safe but can actually improve the limb’s capacity to handle everyday tasks.
The key word is “slowly.” The PAL trial protocol started participants with no weight or one-pound weights and increased by half-pound to one-pound increments only after two sessions with no worsening of symptoms. If any swelling or heaviness appeared, the exercise was either skipped or reduced until symptoms cleared. After the initial supervised period, weight increases happened only after four consecutive sessions at the same level with no problems.
What you should avoid is jumping into intense upper or lower body exercise without this kind of gradual buildup. The goal is to train the limb’s capacity upward over time, not to test its limits on day one. Working with a lymphedema therapist or certified trainer who understands the condition makes this progression much safer.
Blood Pressure Cuffs on the Affected Arm
Standard advice has long been to avoid blood pressure readings, blood draws, and injections on the limb with lymphedema or at risk for it. A large prospective study published in the Journal of Clinical Oncology tracking breast cancer survivors found that blood draws and injections on the at-risk arm were not significantly associated with increased arm volume or cellulitis in multivariate analysis. Blood pressure readings showed a borderline association in one analysis but not in the full adjusted model.
Despite this, most clinical guidelines still recommend using the unaffected arm when possible. The reasoning is cautious: even if the average risk is low, a blood pressure cuff does repeatedly compress the limb, and the consequences of triggering a flare in someone with established lymphedema are significant enough that avoidance remains the safer default. If both arms are affected or the unaffected arm isn’t available, it’s not an emergency to use the lymphedema arm, but let your provider know so they can make an informed choice.
Flying Without Compression
Airplane cabins are pressurized to the equivalent of roughly 6,000 to 8,000 feet elevation, which means lower atmospheric pressure pushing against your body. For a limb with compromised lymphatic drainage, this reduced external pressure, combined with long periods of sitting still, can trigger or worsen swelling. Early case reports documented lymphedema appearing for the first time after flights in people who had been at risk but previously symptom-free.
Large studies have found that the overall statistical risk from flying is modest, but wearing a compression garment during flights remains standard advice, especially for longer trips. If you already use compression daily, wear it on the plane. If you don’t normally wear compression but have lymphedema or are at risk, talk to your lymphedema therapist about a garment specifically for travel. Moving your limbs periodically during the flight, staying hydrated, and avoiding alcohol also help.
Ignoring Signs of Infection
Cellulitis in a limb with lymphedema can escalate quickly and cause lasting damage to whatever lymphatic function remains. The warning signs include increasing redness that spreads, warmth, pain, swelling that changes rapidly, skin dimpling or blistering, and fever or chills. If you notice a rash that’s expanding rapidly along with a fever, that warrants emergency care. A rash that’s growing but without fever should still be seen by a healthcare provider within 24 hours. Catching cellulitis early and treating it aggressively is one of the most important things you can do to protect the limb long-term.