DiabetesTeam

Are you noticing changes in your toenails and wondering if it's related to diabetes? That's a really important thing to pay attention to! Changes in toenails — especially blackening — can be a red flag for people with diabetes.

Here are the most common reasons this can happen:

- Diabetic neuropathy — Nerve damage in the Show Full Answer

Are you noticing changes in your toenails and wondering if it's related to diabetes? That's a really important thing to pay attention to! Changes in toenails — especially blackening — can be a red flag for people with diabetes.

Here are the most common reasons this can happen:

- Diabetic neuropathy — Nerve damage in the feet means you may not feel injuries or poorly fitting shoes, leading to unnoticed wounds or nail damage
- Peripheral arterial disease (PAD) — Reduced blood flow to the feet can cause tissue damage, showing up as color changes in the toes and nails
- Fungal infections — Diabetes can make you more prone to nail fungus, which can discolor and thicken nails
- Trauma or injury — Even a minor bump can cause blood to pool under the nail, turning it black (called a subungual hematoma)
- Medications — Some medications can cause nail discoloration, though this is rare with diabetes-specific drugs

If you notice a blackened toenail or any other nail abnormality, it's best to see a podiatrist or your primary care doctor — even if it's not painful. With diabetic neuropathy, you might not feel pain even when something is seriously wrong.

Some good habits to protect your feet and toenails:

- Inspect your feet and toes every night
- Trim toenails regularly
- Wear well-fitting shoes
- Keep your blood sugar well managed through diet, exercise, and medications

 AI-generated responses are not a substitute for medical advice. These services are not intended to diagnose, treat, or cure any condition or disease. Always ask your doctor about specific health concerns.

Black Toenails With Diabetes: 5 Possible Causes