There are many causes of lower extremity swelling, which can be seen in cardiogenic edema such as heart failure and pericarditis, nephrotic edema such as nephrotic syndrome, and hepatogenic edema such as liver cirrhosis. In addition, it can also be seen in conditions such as hyperthyroidism, diabetes mellitus, and lower extremity phlebitis. Also, certain drug factors, malnutrition, and pregnancy can cause swelling of the lower extremities.