At times, your legs don't push considerable amounts of blood into your heart. This malfunctioning in blood flow causes open sores known as 'venous ulcerations' or 'stasis ulcers'.

Often appearing on legs, venous ulcers are persisting wounds, which may be exceedingly painful. These ulcers need appropriate medication for timely recovery. If neglected, they could appear again. Accompanied by inflammation around the wound region, venous ulcers are among the most frequent skin ulcers.
Causes

Our veins have valves which carry deoxygenated blood vessels from throughout the entire body toward the heart. In the case of veinous insufficiency, valves of this leg veins become damaged, making for backward flow of blood vessels from the legs. The rise of blood from the legs raises the blood pressure, and consequently nutrients and gases aren't consumed by the cells. Cells at the legs begin dying, resulting in wound formation.

Following things can increase your chances of getting these ulcers:

Smoking
Blood clotting history in the legs
Serious injuries to the leg, such as, fracture, muscle damage, or severe burns
Formation of blood clots in leg veins
Obesity
Limited movement
Standing for a long time

Old people are more likely to get venous ulcers if they have compromised immune systems.
Signs & Symptoms

Venous ulcerations can be avoided by treating the early signs of this disease. These early signs include:

Hardening of the skin
Itching and tingling sensations
Stasis Dermatitis – Changes in skin because of excessive fluid in the legs
Swelling, cramping, and heaviness
Color of the leg changes to deep red, purple or brown

If your doctor fails to diagnose those are early signs, you might begin to get from venous Disorders, they Including:

Pain in legs
A wound covered with yellow tissue and exposing red base
Discoloration of surrounding skin
Infection in the wound leads to pus accumulation and bad odor

Treatment

The ulcer is generally treated as ordinary wounds. A nurse dresses and cleans the wound and repeats the procedure each week or so. But you want some specialized treatments to fully cure the ulcer, some of which are:
1. Elevation of the Leg

1 method of treating venous ulcers would be to restore the normal flow of blood -- from legs to the heart. This procedure helps best if your leg is swollen. While lying on the mattress, keep the degree of the legs higher than the hip. You put some pillows under your legs to maintain it raised. This practice can be blended with compressed bandaging to take care of several symptoms simultaneously.
2. Compressed Bandages

This really is the most vital measure of treatment as it aims at lessening the pressure built up in veins brought on by excess fluids. Ordinarily, the doctor covers the dressing with 3-5 layers of bandages. While bandaging, a higher pressure is applied in the ankle because this practice is the most effective in the healing procedure. The strain is slowly diminished toward the knee and knee.


Source: https://aderonkebamidele.com/venous-ulcers-causes-symptoms-treatment/