What are the causes of lower limb edema

Lower limb edema is a symptom. Clinically, many diseases may cause lower limb edema. Patients must pay attention to the problem of lower limb edema. This may be closely related to the disease, such as some kidney diseases. It is recommended to go to the hospital for examination as soon as possible and prescribe the right medicine. So what are the specific causes of lower limb edema?

1. Renal edema

In patients with acute nephritis, chronic nephritis or kidney disease, due to reduced renal blood flow, sodium and water retention, increased capillary permeability, and excessive protein loss in the urine, the plasma colloidal osmotic pressure will be reduced, causing fluid accumulation in the tissue spaces and causing edema.

2. Cardiogenic edema

When right heart failure occurs in various heart diseases, venous blood cannot return smoothly, causing increased pressure in the veins, and body fluids leak into the tissue spaces, causing edema.

3. Hepatic edema

Factors such as liver damage in cirrhosis, obstruction of portal vein return, increased portal vein pressure, and low plasma albumin in liver failure can cause edema.

4. Malnutrition edema

In this case, you should pay attention to checking trace elements to see what nutrients are lacking and supplement them according to needs.

5. Localized lower limb edema

It is mostly caused by obstruction of the veins and lymphatic vessels in the lower limbs, resulting in the entry of body fluids into the tissue spaces. It may be caused by thrombophlebitis of the lower limbs, lymphangitis, filariasis, or compression of the veins by pelvic or lower limb tumors. It can be seen that there are many reasons for leg swelling. It may be a symptom of systemic disease or one of the symptoms of local disease in the lower limbs. Therefore, you must go to the hospital for a comprehensive examination to find out the cause before you can carry out reasonable treatment. We would like to focus on lower limb edema caused by surgical factors, especially edema caused by lower limb vascular diseases. The most common diseases are lower limb venous valvular insufficiency and lower limb deep vein thrombosis.