In rarer cases, pronounced vertical ridges could be a sign of a health issue that needs attention. Some possible causes include:
- Poor circulation
- Thyroid imbalances (both underactive and overactive)
- Rheumatoid arthritis
- Skin conditions like eczema or psoriasis
If nail ridges are accompanied by other unusual symptoms — such as joint pain, changes in skin texture, or unexplained fatigue — it’s best to have it checked by a healthcare professional.
When to See a Doctor
Although vertical ridges are typically harmless, there are times when they could signal something more serious. You should seek medical attention if your nail ridges are accompanied by:
- Dark brown or black streaks underneath the nail
- Nail splitting, thickening, or peeling
- Redness, pain, or swelling around the nail bed
These may point to a fungal infection, injury, or — in rare cases — a form of skin cancer called melanoma, which can develop under the nail.
Early detection matters, so never ignore a sudden or dramatic change in your nail’s appearance.
How to Care for Aging Nails
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