Toenail Fungus Causes

Clear, practical wellness information for everyday life.

Changes in toenails and the surrounding skin can have many possible explanations. This guide provides general educational information that can help you organize questions and everyday observations.

What to know

Pay attention to changes in color, thickness, texture, tenderness, moisture and the skin around the nail. A single visual sign does not always identify a specific cause, so avoid assuming that every unusual-looking nail is a fungal infection.

Everyday care

Keeping feet clean and dry, allowing footwear to air out, changing damp socks and choosing comfortable shoes can support a sensible foot-care routine. Avoid sharing personal nail tools, and keep tools clean according to their instructions.

When to seek professional advice

If a nail change is persistent, spreading, painful, associated with swelling or drainage, or you are unsure what is causing it, consider speaking with a qualified healthcare professional. People with conditions that affect circulation, sensation or immune function may need individualized advice.

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