Melanonychia

Melanonychia is a term used to describe a condition characterized by the presence of dark pigmentation or discoloration of the toenail. It is commonly associated with an increased level of melanin in the nail cells. Melanin is the pigment responsible for the color of our skin, hair, and nails. Melanonychia can manifest as a single dark line, multiple lines, or even involve the entire nail. It can be caused by various factors, including trauma, infections, medications, inflammatory disorders, or even certain types of skin cancer. It is essential to consult a healthcare professional for proper diagnosis and appropriate treatment, as the underlying cause may need to be addressed.