5 Serious Health Problems Your Nails Could Be Trying to Warn You About
Most people don’t pay much attention to their nails beyond trimming or polishing them. But doctors say your nails can actually reveal important clues about your overall health. Changes in color, texture, or shape may be your body’s way of warning you that something serious is happening inside.
Here are five nail changes you should never ignore:
1. Pale or White Nails – Possible Anemia or Liver Issues
If your nails look very light, almost white, this may be a sign of anemia, meaning your body lacks enough healthy red blood cells. In some cases, pale nails can also indicate liver disease, especially when paired with fatigue or yellowish skin.
2. Yellow, Thick Nails – Fungal Infection or Lung Problems
Nails that turn yellow and slowly become thick or curved are often caused by a fungal infection. But when the yellowing is severe and also includes slow nail growth, it could be linked to chronic lung issues, such as bronchitis.
3. Spoon-Shaped Nails – Iron Deficiency
If the nails curve upward like a spoon, doctors call this koilonychia. It is often connected to iron deficiency, poor nutrition, or sometimes internal bleeding. It is one of the clearest nail signs that needs medical attention.
4. Dark Lines Under the Nail – Possible Melanoma
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4. Dark Lines Under the Nail – Possible Melanoma
A dark stripe or line running vertically under the nail should never be ignored. This can be a sign of subungual melanoma, a rare but dangerous type of skin cancer. If you notice dark stripes—especially if they widen or change—see a doctor immediately.
5. Deep Ridges or Pitting – Autoimmune Conditions
Small dents or pits in the nails can be associated with psoriasis or alopecia areata, both autoimmune conditions. Deep horizontal lines, known as Beau’s lines, can also appear after a serious illness, high fever, or severe stress.
When Should You See a Doctor?
If you notice sudden changes in your nails that don’t improve within a few weeks, it’s best to consult a healthcare professional. Your nails can’t diagnose health problems by themselves, but they can provide important early warning signs that something isn’t right.
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