The skin around my ankles is getting darker and thicker over time. What causes this?

Darker, Thicker Skin Around the Ankles: What Can Cause It?

Detail

Gradually darkening and thickening skin around the ankles is often related to circulation problems in the veins, particularly chronic venous insufficiency. When blood pools in the lower legs, pressure in the small veins increases and can cause inflammation, skin thickening, and brownish discoloration.

Common Causes

1. Chronic venous insufficiency

   • Brown, reddish, or dark skin around the ankles

   • Swelling that is worse later in the day

   • Aching, heaviness, or tired legs

   • Varicose or spider veins

2. Stasis dermatitis

   • Skin becomes darker, dry, scaly, itchy, or thickened.

   • It commonly occurs around the lower legs and ankles as a consequence of poor venous circulation.

3. Repeated irritation or scratching

   • Persistent itching, rubbing, or eczema can gradually make skin thicker and darker.

4. Diabetes or other metabolic conditions

   • Diabetes can contribute to skin changes and circulation problems, although dark ankle skin alone does not diagnose diabetes.

5. Previous inflammation or injury

   • An old wound, infection, or repeated inflammation can leave areas of permanent or slowly changing pigmentation.

What You Can Do

If swelling is present, elevating your legs, staying physically active, and avoiding prolonged periods of sitting or standing may help circulation. Compression stockings can also be useful for some people with venous insufficiency, but they should be chosen appropriately—particularly if you have known circulation problems in the arteries.

Avoid harsh scrubbing or bleaching products to try to remove the discoloration; they can worsen irritation.

When to Get Checked

Because the change is progressively becoming darker and thicker, it would be sensible to have it examined by a doctor, especially if you also have swelling, pain, itching, varicose veins, or skin ulcers.

Seek urgent medical attention if one leg suddenly becomes swollen, painful, red, or warm, or if you develop chest pain or shortness of breath. Those symptoms can indicate a blood clot or another emergency.