What is the problem with black spots on my toenails

A nevus cell nevus, also known as a pigmented nevus, is a benign new organism composed of nevus cells. It is the most common benign skin tumor. It varies in size and can be several millimeters large. It may also be seen in malignant melanoma, which is derived from melanoma cells with a higher degree of malignancy. It can occur in the skin, but also in the skin and mucosa junction. Malignant melanoma under the nail is also more common. In addition toenails show black spots, also seen in multiple nevus cell nevus. Also seen in trauma, showing under the nail congestion and other performance. Such as showing toenails black spots, it is recommended that patients go to a regular hospital.