My feet are swollen every summer, and the weather is very hot.

Cause of leg swelling 1, renal edema. Suffering from acute nephritis, chronic nephritis or nephropathy, due to decreased renal blood flow, sodium and water retention, increased capillary permeability, excessive loss of protein in urine, decreased plasma colloid osmotic pressure, and accumulation of interstitial fluid, edema is caused.

Causes of leg swelling II. Cardiogenic edema. When right heart failure occurs in all kinds of heart diseases, venous blood can not flow back smoothly, which leads to the increase of venous pressure and the leakage of body fluids into the interstitial space, causing edema.

Causes of leg swelling 3. Liver edema. Liver damage leads to cirrhosis, portal vein reflux is blocked, portal vein pressure is increased, and plasma albumin is low during liver failure, which can all cause edema.

Causes of leg swelling 4. Malnutrition and edema.

The cause of leg swelling. Local edema of lower limbs. Most of them are caused by the blockage of veins and lymphatic vessels in the lower limbs, which leads to the entry of body fluids into the gap, thrombophlebitis, lymphangitis, filariasis and pelvic or lower limb tumors compressing the veins.