4. Dark nails
This is often caused by an overproduction of melanocytes, which are cells that produce melanin. It may also be a symptom of a fungal nail infection or more serious issues, such as psoriasis, melanoma and a chronic infection.
4. Dark nails
This is often caused by an overproduction of melanocytes, which are cells that produce melanin. It may also be a symptom of a fungal nail infection or more serious issues, such as psoriasis, melanoma and a chronic infection.