A new dark stripe in a nail: why a clinician should assess it

A new dark stripe in your nail could indicate an underlying health issue and should be assessed by a clinician. ## What Causes a Dark Stripe in a Nail? A dark stripe, known as melanonychia, can result from several factors, including trauma, fungal infections, or, in rare cases, melanoma (a type of skin cancer). ### Common Causes - Trauma: Injury to the nail bed can cause discolouration. - Fungal Infections: These can lead to dark streaks or spots. - Medications: Certain drugs may cause nail pigmentation changes. - Melanoma: Although rare, a dark stripe could be a sign of nail melanoma. ## When to Seek Medical Advice - Persistent Streak: If the stripe doesn’t fade or grows over time. - Width Changes: If the stripe widens or darkens. - Pain or Bleeding: Any discomfort or bleeding around the nail. - Multiple Nails: If dark stripes appear on several nails. ## What to Do Today If you notice a new dark stripe in your nail, schedule an appointment with a clinician for a thorough evaluation. Early assessment can help identify any serious conditions and ensure appropriate treatment.