Diabetic swelling that has remained for about ten days

by Henry Murray
(Laurel Delaware U.S.)



Answer by: Dr. Albana Greca Sejdini, MD, MMedSc

Medically reviewed by: Dr. Ruden Cakoni, MD, Endocrinologist

Last medically reviewed: July 2026



Question From Henry




For about the last 10 days, my legs have been swollen from the knees down.


I am having difficulty sleeping in bed at night and have resorted to sleeping in a chair. What would you recommend to get the swelling down? It is pretty severe.


I have type 2 diabetes, and my foot doctor tells me there is nothing that helps the neuropathy. My VA doctor cuts my toenails and says humidity causes the swelling and it will go down after summer.





Quick Answer: Severe new swelling in both lower legs lasting 10 days needs prompt medical assessment. Because you are unable to sleep in bed, you should be evaluated today. If lying flat makes you short of breath, or you have chest pain, sudden breathing difficulty, faintness or coughing blood, call 911 or your local emergency number now. Do not assume humidity or neuropathy is the cause.





Call emergency services now if you have:



  • Shortness of breath, especially when lying flat or waking at night gasping

  • Chest pain, chest pressure, coughing blood or pink frothy mucus

  • Fainting, confusion, blue or gray lips, or severe weakness

  • One leg suddenly much more swollen, painful, red or warm than the other

  • A rapidly worsening foot wound, spreading redness, fever, drainage or black skin




Why Sleeping in a Chair Matters



Some people sleep in a chair because swollen legs feel uncomfortable. Others do it because breathing becomes difficult when lying flat, called orthopnea. Leg swelling with orthopnea can occur when fluid builds up because the heart is not pumping effectively. Serious kidney problems can also cause swelling. This cannot be diagnosed online.



If breathing prevents you from lying down, stay upright while arranging emergency care; do not force yourself flat to elevate your legs. If the chair is only for comfort, the severe 10-day swelling still warrants same-day care.



What Can Cause Severe Leg Swelling?



Diabetes increases the risk of several conditions that may cause edema, but diabetes itself does not explain every swollen leg. Possible causes include:




  • Heart failure or another heart condition

  • Kidney disease, including diabetes-related kidney disease

  • Chronic venous insufficiency or lymphatic blockage

  • A blood clot, especially when one leg is more affected

  • Skin or soft-tissue infection

  • Liver disease or low blood protein

  • Pioglitazone, some blood-pressure medicines, NSAID pain relievers or steroids

  • Prolonged sitting, heat or excess salt, which may worsen swelling



Diabetic neuropathy usually causes numbness, burning, tingling or pain—not swelling. Reduced sensation can hide a wound, infection or acute Charcot foot. Current guidance recommends urgent referral for unexplained foot swelling, redness or heat. Read about diabetes complications and warning signs.



What the Clinician May Check



A same-day examination may include blood pressure, heart rate, oxygen level, weight, heart and lung sounds, leg pulses, skin, wounds and whether the swelling dents when pressed. Testing may include:




  • Kidney function, electrolytes, liver tests, blood count and urine protein

  • ECG, chest X-ray, BNP or echocardiogram if heart failure is suspected

  • Leg ultrasound when a blood clot is possible

  • Foot X-ray or specialist assessment if Charcot foot, infection or injury is suspected

  • A complete review of prescription medicines, pain relievers and supplements



Kidney disease may develop before symptoms, so blood tests and urine albumin are important. See diabetes and kidney disease.



What to Do Until You Are Examined




  • Arrange same-day medical care and ask someone else to drive if you feel weak or breathless.

  • Continue prescribed medicines unless a clinician tells you otherwise, and bring a complete medicine list.

  • Check both feet for blisters, wounds, redness, drainage, warmth or color change.

  • Avoid tight shoes and protect numb feet from heat, cold and injury.

  • Limit very salty foods while waiting for assessment, unless your clinician has given different instructions.

  • Record morning weight, glucose readings, when swelling began and whether lying flat affects breathing.



What Not to Do Before the Cause Is Known




  • Do not massage a severely swollen, painful, red or warm leg; a clot or infection must first be excluded.

  • Do not start compression stockings until circulation, heart status and the cause have been assessed.

  • Do not start diuretics or change their dose yourself; they can affect kidneys, blood pressure and electrolytes.

  • Do not use edema supplements such as butcher’s broom or apple cider vinegar instead of medical evaluation.

  • Do not begin strenuous exercise while severe unexplained swelling is being evaluated.



After the cause is identified, the clinician may recommend safe elevation, prescribed compression, activity changes, salt limits, medicine adjustment or a diuretic. The correct treatment depends on the diagnosis.



Can Diabetic Neuropathy Be Treated?



Nerve damage may not reverse, but “nothing helps” is too absolute. Glucose management and protective foot care can reduce further injury, while several prescription treatments may reduce neuropathic pain. Ask for a neuropathy and circulation assessment or referral. Our diabetic neuropathy guide explains treatment options.



Related Questions




Related Resources




References



  1. American Heart Association: Heart Failure Signs and Symptoms

  2. CDC: Signs and Symptoms of Blood Clots

  3. MedlinePlus: Edema

  4. ADA: Neuropathy and Foot Care—Standards of Care 2026



Medical disclaimer: Educational only—not personal medical advice. Severe or unexplained leg swelling requires assessment by a qualified healthcare professional.


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