There are many possible reasons for swollen feet. In most cases, swelling isn’t serious and can be relieved by resting or soaking your feet in ice water.

However, if swelling happens suddenly, it could point to an underlying condition, and you should seek medical attention right away.

Common Causes of Foot Swelling

1. Deep Vein Thrombosis (DVT):
As the Mayo Clinic explains, DVT occurs when a blood clot forms in the body’s deep veins, most often in the legs. Symptoms may include swelling, heaviness, and more visible veins. Some people may have no symptoms at all. DVT is dangerous because it can block blood flow to the lungs, leading to a pulmonary embolism.

2. Achilles Tendonitis:
The Achilles tendon is the body’s strongest tendon and is used constantly during daily activities. Overuse can lead to pain and restricted movement. With Achilles tendonitis, swelling may occur in the ankles and heels, especially after exercise or physical activity.

3. Osteoarthritis:
Osteoarthritis is the most common form of arthritis. When it affects the feet, it can cause pain, tenderness, stiffness, and swelling. Activities like yoga may help ease discomfort.

4. Heart Failure:
The American Heart Association notes that heart failure can sometimes show subtle signs—swollen feet being one of them. This happens when the heart can’t pump properly, leading to fluid buildup in the legs, feet, or ankles.

5. Lymphedema:
According to the Mayo Clinic, lymphedema occurs when excess lymphatic fluid collects in an arm or leg, causing swelling. If the swelling develops quickly or becomes severe, medical care is essential.

6. Cellulitis:
Some theories link cellulitis to poor blood circulation in the lymphatic system. While it can affect any part of the body, it most often appears on the legs below the knee, causing swelling and warmth in the skin.

7. Gout:
The National Institute of Arthritis explains that gout is a type of arthritis caused by too much uric acid in the body. It is extremely painful and often flares up at night. The big toe’s inner joint can become red, swollen, and tender very quickly. Severe pain or a first-time attack should be evaluated by a doctor immediately.

8. Foot Bursitis:
Bursitis affects small, fluid-filled sacs that cushion bones, muscles, and tendons. While common in the shoulders, hips, and elbows, it can also develop in the knees, heels, and big toes. Foot bursitis can lead to pain, stiffness, redness, and swelling.

9. Rheumatoid Arthritis:
This condition often starts in the feet. Symptoms vary but commonly include swollen, painful joints and significant swelling. Nodules beneath the skin can also cause surrounding tendons and muscles to enlarge.

If you notice swelling in your feet and think it could be linked to a medical condition, it’s important to see a doctor.

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