Your Nails May Be Telling You Something: 3 Signs to Watch For
Changes in your nails are often harmless, but persistent or sudden changes can sometimes provide clues about your health. Three signs worth paying attention to are:
- A new dark or brown streak on one nail
Most dark nail streaks have benign causes, but a new or changing dark band—especially one that becomes wider, has irregular coloring, or extends onto the surrounding skin—should be examined by a dermatologist to rule out nail melanoma. - Nails that become spoon-shaped
Nails that curve upward at the edges and form a depression in the center (koilonychia) can sometimes be associated with iron deficiency, although there are other possible causes. - Nails that become yellow, thick, or crumbly
This is commonly caused by a fungal nail infection, but other conditions—including psoriasis and certain medical disorders—can produce similar changes.
When to get checked
Don’t rely on nail appearance alone to diagnose a disease. If a nail change is new, persistent, painful, rapidly worsening, or affecting only one nail, it’s worth having a healthcare professional examine it.
And if you notice a new dark streak that is changing, don’t ignore it—early evaluation is particularly important.
