Ulcers on legs from diabetes can develop when circulation problems, nerve damage, and skin injuries interfere with normal healing. These wounds may occur on the feet, ankles, or lower legs and can become serious if infection or tissue damage develops.

Understanding why these ulcers occur and knowing when to seek medical attention can help people with diabetes protect their skin and reduce the risk of further complications.

Why Does Diabetes Increase the Risk of Leg Ulcers?

Diabetes can affect blood vessels and nerves throughout the body. Over time, high blood glucose levels may contribute to peripheral neuropathy, which reduces the ability to feel pain, heat, or pressure.

As a result, a small cut or blister may go unnoticed. If the affected area continues to experience pressure or friction, the wound can become larger and deeper.

Diabetes may also contribute to peripheral artery disease, which reduces blood flow to the legs and feet. Poor circulation can make it harder for wounds to receive the oxygen and nutrients needed for healing.

Some leg ulcers have other causes, including venous circulation problems. A medical assessment is important to determine the underlying reason for the wound.

Common Signs of Leg Ulcers

Leg ulcers may appear as open sores, shallow wounds, or areas where the skin has broken down. Their appearance varies depending on the cause and severity.

Possible warning signs include:

• A wound that does not heal.

• Redness, swelling, or warmth around the affected area.

• Fluid or pus coming from the wound.

• Changes in skin colour.

• Increasing pain or tenderness.

• Dark or blackened tissue.

• An unpleasant smell associated with the wound.

People with diabetic nerve damage may have little or no pain, so the absence of discomfort does not mean an ulcer is harmless.

How Are Leg Ulcers Diagnosed?

A healthcare professional will examine the wound and ask about the patient's diabetes history, medicines, and previous ulcers. Assessment may include checking foot sensation, circulation, wound depth, and signs of infection.

Depending on the findings, tests may be needed to evaluate blood flow or determine whether an infection has affected deeper tissue or bone.

Early assessment helps the care team select appropriate treatment and identify factors that could delay healing.

Treatment Options for Ulcers on Legs from Diabetes

Treatment depends on the wound's cause and severity. It may include professional wound cleaning, suitable dressings, pressure reduction, blood glucose management, and treatment of any confirmed infection.

If poor arterial circulation is contributing to the ulcer, specialist vascular assessment may be necessary. Venous ulcers may require a different treatment approach, sometimes including compression therapy when a clinician confirms that it is safe.

Do not apply compression bandages or use medicated creams without professional advice, particularly when circulation is reduced.

Preventing Further Ulcers

Check your feet and lower legs daily. Look for cuts, cracks, blisters, swelling, colour changes, and areas of skin breakdown. Wear suitable footwear and avoid walking barefoot.

Keep scheduled diabetes appointments and ask about regular foot examinations if you have reduced sensation or a history of ulcers. Good blood glucose management and avoiding tobacco can also support overall vascular health.

When to Seek Medical Help

Anyone with diabetes who develops a new leg or foot ulcer should seek prompt medical assessment. Urgent care is particularly important if there is spreading redness, pus, fever, blackened tissue, or rapidly worsening swelling.

Conclusion

Ulcers on legs from diabetes require careful assessment because nerve damage and poor circulation can delay healing. Early treatment, daily skin checks, and personalised diabetes care can help protect the legs and feet and reduce the risk of serious complications.