Hello,
I see you are asking "What is epidermal nevus syndrome?"
Collapse Section. An epidermal nevus (plural: nevi) is an abnormal, noncancerous (benign) patch of skin caused by an overgrowth of cells in the outermost layer of skin (epidermis ). Epidermal nevi are typically seen at birth or develop in early childhood. Affected individuals have one or more nevi that vary in size.
For more information, you can visit this URL - skincarehealthcenter. com/condition/epidermal-nevus-syndrome/c/12454