Crohn's disease generally does not cause swelling of the feet, but if it causes nutritional disorders, there will be manifestations of swelling of the feet. This is due to hypoproteinemia, which leads to a decrease in the colloid osmotic pressure of the plasma, and the water and fluids in the blood vessels flow out into the tissue fluid, forming swelling in the feet. In addition to foot swelling, there may also be abdominal pain, diarrhea, intestinal obstruction, and fever, and some may affect the liver, joints, or skin. For more noticeable foot swelling, it is appropriate to use diuretics. There is no specific treatment for Crohn's disease; it is mainly treated with medication and surgery to manage its complications and enhance nutritional support. (The use of medication should be under the guidance of a professional doctor.)