Varicose Veins and Diabetes: A Double Risk for the Legs

Yes, the combination of varicose veins and diabetes increases the risk of complications affecting the legs. Venous stasis contributes to swelling and skin damage, while diabetic neuropathy may mask pain and slow healing. Therefore, it is important not to rely solely on how you feel or on the appearance of the veins.

By evening, the legs may swell, shoes may feel tight, and a spot or small wound may appear on the lower leg. At the same time, there may be little or no pain. The absence of pain in diabetes does not rule out a serious problem.

How Diabetes Changes the Course of Venous Disease

With varicose veins, the valves in the superficial veins do not function properly. Some blood flows downward instead of returning efficiently to the heart. The strain on the venous wall and lower-leg tissues increases. Heaviness, a feeling of pressure, swelling, itching, changes in skin color, and signs of impaired tissue nourishment may develop.

Diabetes adds several risk factors:

• elevated glucose levels impair the function of small blood vessels and tissues;
• neuropathy reduces sensitivity in the feet and lower legs;
• small cracks, burns, and areas of friction may go unnoticed;
• damaged skin heals more slowly;
• an infection in a wound may develop faster than expected.

Neuropathy may mask pain caused by swelling, pressure from footwear, skin inflammation, or injury. Sometimes only indirect signs remain: sock marks, changes in skin color, oozing, an unpleasant odor, localized warmth, or sudden weakness in the leg.

In diabetes, it is important to assess not only symptoms but also the condition of the skin, sensitivity, arterial pulses, venous blood flow, and overall disease control. Vein duplex ultrasound helps assess vein patency, the direction of blood flow, and valve function. However, a vein examination does not replace assessment of the arteries and foot condition when there is a wound, a cold limb, or suspected impaired blood supply.

Venous, Diabetic, or Arterial Ulcer?

A leg ulcer cannot be diagnosed from a photograph alone. One person may have varicose veins, neuropathy, and inadequate arterial blood flow at the same time. In this situation, the signs overlap, and standard care may be insufficient or unsafe.

In general, the differences are as follows:

These are guidelines, not a way to diagnose yourself. A venous ulcer is more often located on the lower leg, especially near the ankle. It may ooze and be accompanied by swelling and changes in skin color. A diabetic ulcer more often develops on the sole, toe, or an area pressed by footwear. Because of neuropathy, a person may barely feel the wound.

An arterial ulcer is usually associated with insufficient blood flow. Typical signs include a cold foot, pallor or bluish discoloration, a weak pulse, and pain that intensifies at rest or when the leg is elevated. With these signs, do not start compression treatment on your own or delay seeking medical attention.

I discuss the signs and management of skin damage in detail in my article about trophic ulcers. In diabetes, any non-healing wound on the foot or lower leg should preferably be examined in person by a doctor, even if it is small and causes little or no pain.

What You Can and Cannot Do When Varicose Veins and Diabetes Coexist

The main goal of leg care is not to wait for pain but to notice changes at an early stage. Inspect your feet and lower legs every day in good lighting. The soles can be checked conveniently with a mirror or with the help of someone close to you.

Helpful habits:

• inspect the skin, spaces between the toes, heels, and areas pressed by footwear;
• check for cracks, blisters, calluses, redness, oozing, or darkening;
• wear comfortable shoes without tight seams or pressure on the toes;
• choose dry socks without tight, rough elastic;
• wash your feet with warm, not hot, water and gently pat them dry with a towel;
• use moisturizing cream for dry skin, without applying it between the toes;
• maintain the glucose control agreed upon with your endocrinologist;
• do not walk barefoot at home, on the beach, or in the garden.

What you should not do:

• warm your feet with a heating pad or hot water;
• cut off calluses or corns yourself;
• apply alcohol, iodine, vinegar, aggressive solutions, or 「folk」 remedies to a wound;
• cover an injury with a dense adhesive dressing without necessity;
• choose compression hosiery without an assessment of arterial blood flow;
• delay a visit because there is no pain;
• stop prescribed medications for diabetes or vascular diseases on your own.

Compression may be part of treatment for venous swelling. However, in diabetes, the condition of the arteries, sensitivity, and the presence of wounds must be assessed before it is prescribed. Incorrectly selected pressure in the presence of impaired arterial blood flow can worsen the situation.

When Is Urgent Help Needed?

Seek medical help immediately if swelling in one leg is rapidly increasing, or if sudden pain, marked redness, or a firm area along the course of a vein develops. Shortness of breath, chest pain, sudden weakness, and a feeling of not getting enough air are especially dangerous. These situations require emergency care because the symptoms may be associated with serious vascular complications.

Do not wait for a scheduled appointment if:

• a wound on the foot or lower leg does not begin to heal;
• pus, an unpleasant odor, or rapidly spreading redness appears;
• the skin around the injury turns black or changes color sharply;
• one foot suddenly becomes colder than the other;
• blisters develop after a burn or friction;
• new loss of sensation or weakness occurs;
• body temperature rises in the setting of inflammation;
• pain or swelling noticeably intensifies over a short period.

An in-person examination is also needed if a wound is slowly enlarging, there is oozing, the skin is darkening, or swelling keeps recurring. Information about symptoms of leg swelling and varicose vein disease may help you understand the situation, but does not replace an examination.

How Treatment Is Planned

When varicose veins and diabetes coexist, treatment is coordinated by a phlebologist and an endocrinologist. The phlebologist assesses the condition of the veins and whether an intervention is needed. The endocrinologist helps control glucose metabolism and related risks. If there is a foot wound, a diabetic foot specialist, surgeon, or doctor assessing arterial blood flow may also be needed.

First, it is important to determine the cause of the symptoms:

• whether there is abnormal blood reflux through the veins;
• how pronounced the swelling is;
• whether sensitivity is preserved;
• whether arterial blood flow is sufficient;
• whether there is thrombosis or infection;
• where the wound is located and what is contributing to its development.

If varicose veins are confirmed and the condition of the tissues allows treatment, a method appropriate for the patient is selected. In my practice, I perform EVLA with a Biolitec laser, sclerotherapy, including microfoam and Echo-Foam techniques, miniphlebectomy, and CLaCS. EVLA closes the pathologically altered vein with a laser. During sclerotherapy, selected veins are treated using a sclerosant. Miniphlebectomy involves removing individual varicose veins through small punctures.

CLaCS is intended for spider veins. The method combines a cryolaser and sclerotherapy. The laser acts through the skin, while the sclerosant is injected into the feeding vein. Spider veins are not 「removed through punctures」 in this procedure: that approach is miniphlebectomy and is used in other situations.

In diabetes, the decision to perform a procedure is made after an examination and diagnostic assessment. The condition of the skin, presence of wounds, sensitivity, signs of infection, glucose control, and the possibility of safe recovery are taken into account. The cost of treatment can be determined only after an ultrasound examination and preparation of a written estimate, since the extent of the intervention differs from patient to patient.

I have worked in vascular surgery since 2019. At M-Clinic, my task during an appointment is not to assess the problem 「by eye」, but to determine the mechanism of the symptoms and a safe treatment approach.

Practical conclusion: in diabetes, the condition of the legs cannot be assessed by pain alone. Daily skin checks, appropriate footwear, diabetes control, and timely ultrasound examinations help prevent complications from going unnoticed. An in-person medical assessment is needed if there is a wound, a change in color, a cold foot, pus, rapidly increasing swelling, or sudden pain. Appointments can be booked by calling +998 99 883-93-21.

This article is for informational purposes only and does not replace a consultation with a qualified physician. If you are experiencing symptoms, please see a specialist.