Understanding Melanonychia: Causes, Symptoms, and Treatment

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Mark Strom, MD, FAAD on Instagram: "Do you know how to recongize skin cancer in your nail? Longitudinal melanonychia is the medical term for a dark band in the nail. It has multiple different causes including genetic, medication-induced, moles in the nail bed, and most concerningly nail melanoma. Nail melanoma is more likely to be wide, multiple different colors or very dark brown, and can spread to the skin around the nail, compared to benign causes of longitudinal melanonychia. If you have dar