Lower Limb Swelling: Causes, Diagnosis and Treatments

Common Causes of Lower Limb Swelling

There are several reasons for lower limb swelling in the feet, legs, and ankles. In most cases, it occurs due to lifestyle-related causes, such as:

Being overweight

Excess body mass can decrease blood circulation, causing fluid to build up in your feet, legs, and ankles.

Standing or sitting for long periods

When muscles are inactive, they cannot pump body fluids to the heart. Water and blood retention can trigger swelling in the legs.

Other Possible Causes

Natural hormonal changes

Fluctuating levels of estrogen and progesterone can reduce circulation in the legs and lead to swelling. These changes in hormone levels can occur during pregnancy and a woman's menstrual cycle.

A blood clot in the leg

A blood clot is a group of blood that is in a solid state. When a blood clot forms in a vein in the leg, it can affect blood flow and cause swelling and discomfort.

Injury or infection

An injury or infection affecting the foot, leg, or ankle causes increased blood flow to the area. This presents a swell.

Pericarditis

This is long-term inflammation of the pericardium, which is the sac-like membrane that surrounds the heart. Breathing problems and considerable chronic bulge of the legs and ankles are caused by the disease.

Lymphoedema

Lymphedema, also called lymphatic obstruction, causes blockages of the lymphatic stream. This system is made up of lymph nodes and blood vessels that help transport fluid throughout the body. A blockage in the lymphatic system causes the tissues to swell with fluid, causing swelling in the arms and legs.

Preeclampsia

During pregnancy, this disease causes increased blood pressure. Increased blood pressure can lead to poor circulation and a swollen face, hands, and legs.

Cirrhosis of the liver

This refers to severe scarring of the liver, which is often caused by alcohol abuse or an infection (hepatitis B or C). High blood pressure and low circulation in the feet, legs, and ankles may be caused by the disorder.

Conditions that Cause Lower Limb Swelling

• Congestive Heart Failure (CHF)
• Chronic Kidney Disease (CKD)
• Deep Vein Thrombosis (DVT)
• Chronic Venous Insufficiency
• Nephrotic Syndrome
• Hypothyroidism
• Varicose Veins
• Pulmonary Hypertension
• Cellulitis
• Rheumatoid Arthritis
• Gout
• Kaposi's Sarcoma (in advanced HIV/AIDS cases)

Related Symptoms

Accompanying signs and symptoms may include:

• Pain or tenderness in the leg
• Skin discoloration or redness
• Warmth over the affected area
• Difficulty walking
• Shortness of breath (if heart or kidney related)
• Fatigue
• Abdominal bloating (with liver disease)
• Fever (if infection is present)

When to Visit a Doctor?

Lower limb Swelling can be a sign of many conditions, ranging from mild to severe. Some conditions can be life-threatening and require an emergency response.

• Sudden, unexplained leg swelling after an injury
• Painful, cold, pale swelling in one leg with blisters or redness
• Worsening swelling, especially with heart or kidney disease
• Leg swelling with a swollen abdomen, especially with liver disease, Swelling with fever
• Sudden or severe swelling during pregnancy (possible preeclampsia)
• Chronic leg swelling unresponsive to home remedies

Diagnosis and Tests

Your doctor can order one or more of the following tests to help diagnose the cause of the swelling:

• Blood tests, including blood counts, kidney and liver function studies, and electrolytes assess various organs
• X-rays to view bones and other tissues.
• Ultrasound for the examination of lungs, blood vessels, and tissues
• Electrocardiogram to assess heart function
• Your doctor would typically prescribe home care if your lower limb swelling is due to a lifestyle habit or a minor injury. If your swelling results from an underlying health condition, your doctor will first try to treat that specific condition.

Treatment and Management

There are several treatments you can try at home if your feet, legs, and ankles become swollen regularly.

• Elevate your legs whenever you are lying down. Your legs should be elevated so they are above your heart. You may want to put a pillow under your legs to make them feel more comfortable.
• Keep healthy and concentrate on the legs being spread and moving.
• Reduce your salt intake, which can decrease the amount of fluid that can collect in your legs.
• Avoid wearing garters and other restrictive clothing around your thighs.
• Maintain a healthy body weight.
• Wear support stockings or compression stockings.
• Get up or move around at least once an hour, especially if you are sitting or standing for long periods.

How can Lower Limb Swelling be Prevented?

Foot, leg, and ankle lower limb swelling cannot always be prevented. Some good strategies include:

• Exercise regularly to maintain good circulation. For adults ages 18 to 64, the World Health Organization's trusted source recommends 150 minutes of moderate-intensity exercise or 75 minutes of high-intensity exercise per week.
• Avoid sitting or standing for a long time. Be sure to get up or move around periodically if you sit or stay still for long periods.
• Regulate your salt intake. The Dietary Guidelines for Americans, a trusted source, recommend that adults consume no more than 2,300 milligrams of salt daily.

Home Remedies for Lower Limb Swelling

• Elevate your legs several times a day.
• Soak feet in warm water with Epsom salt.
• Massage legs gently to encourage circulation.
• Drink plenty of water to prevent fluid retention.

Lifestyle Changes for Lower Limb Swelling

• Incorporate regular walking or low-impact exercise like swimming.
• Reduce salt intake to manage fluid balance.
• Monitor weight regularly.
• Avoid smoking and alcohol, which can worsen swelling.
• Follow prescribed medications and attend regular check-ups.