Nevusen
Nevusen is a term that can refer to a few different things, primarily in the context of biology and dermatology. Most commonly, it is a misspelling or variant of "nevus," which is the medical term for a mole or birthmark. Nevus is a benign (non-cancerous) growth on the skin that can vary in color, size, and shape. These can be congenital, meaning present at birth, or acquired later in life. The appearance of nevi is influenced by genetics and sun exposure. Dermatologists often monitor nevi for changes that could indicate melanoma, a type of skin cancer.
In some less common contexts, "Nevusen" might be used as a surname. It could also potentially refer