Leg swelling can occur in any part of the legs, including the feet, ankles, calves and thighs.
Leg swelling can result either from fluid buildup (fluid retention) or from inflammation in injured or diseased tissues or joints. Sometimes leg swelling can indicate a more serious disorder, such as heart disease or a blood clot.
You can have swelling due to fluid buildup simply from being overweight, being inactive, sitting or standing for a long time, or wearing tight stockings or jeans.
Seek medical care right away if your legs swell for no apparent reason, especially if you have unexplained leg pain, difficulty breathing, chest pain or other warning signs of a blood clot in your lungs or a heart condition.
When to see a doctor
Seek emergency medical care if you have leg swelling and any of the following signs or symptoms, which can indicate a blood clot in your lungs or a serious heart condition:
- Chest pain
- Difficulty breathing
- Shortness of breath with exertion or lying flat in bed
- Fainting or dizziness
- Coughing blood
Also, seek immediate care if your leg swelling:
- Occurs suddenly and for no apparent reason
- Is related to a physical injury, such as from a fall, a sports injury or a car accident
- Occurs in one leg and is painful, or is accompanied by cool, pale skin
Schedule a doctor's visit
Nonemergency problems related to leg swelling still need prompt care. Make an appointment as soon as possible so that your doctor can diagnose the cause.
Source:
https://www.mayoclinic.org/symptoms/leg-swelling/basics/definition/sym-20050910
