Melanonychia is a condition where dark brown, black, or grey pigmentation appears on the nail plate. It is particularly common among individuals with naturally darker skin tones who have more melanin in their skin.
Identifying Melanin Discoloration
Stable Appearance
Typically appears as vertical dark lines or shadowy patches. The nail remains fully attached to the bed.
Smooth Texture
The nail surface remains smooth and healthy, with no visible roughness, flaking, or sponginess.
Common Locations
Often seen on little toenails or areas under constant pressure from shoes and friction.
Possible Causes
External Pressure
Constant friction from tight shoes and socks is a leading cause of pigment gathering on smaller toes.
Physical Trauma
Past injuries or damage during manicures can trigger localized melanin collection.
Genetics & Health
Natural genetic changes or underlying systemic factors can also trigger these pigmentation patterns.
Melanonychia vs. Melanoma
It is crucial to differentiate between simple pigmentation and melanoma (a form of cancer):
- Melanonychia: Usually stable, uniform, and presents as accurate vertical shapes.
- Suspected Melanoma: May present as irregular, multi-colored lines that are diagonal or uneven, often spreading under the cuticle.
If you notice rapid changes or irregular shapes, we strongly recommend visiting a dermatologist for a medical evaluation.
Clinical Gallery
Recommendations
- Avoid Over-Cleaning: Do not try to clean the dark area with harsh chemicals; this can damage the nail and increase pigment visibility.
- Pressure Management: Switch to shoes that do not apply permanent friction or pressure to the toes.
- Professional Care: While deep pigment cannot be fully removed, we can polish the upper layer to lighten the appearance.
Noticed a new dark line on your nail?
Let us help you assess the pigmentation and provide professional recommendations for your nail health.
Consult on WhatsApp*Information provided on our website is not medical advice and shared for information purposes only. To get a final diagnosis, please contact a medical doctor.