What is a nevus commonly known as?

A nevus is commonly known as a birthmark. This term refers to a pigmented or non-pigmented lesion that can appear on the skin at birth or develop shortly after. Nevi (plural of nevus) come in various forms and colors, and while many are harmless and just cosmetic in nature, some can change over time or require monitoring for potential health issues.

Understanding the characteristics of a nevus is essential for recognizing skin abnormalities, as they can vary from small and flat to raised and large. This distinction plays a crucial role in skin health and aesthetic considerations in cosmetology. The other choices provided do not accurately reflect what a nevus is; for example, scars are typically a result of healing from injury, blemishes often refer to temporary marks or imperfections, and rashes are generally inflammatory skin reactions, none of which capture the nature of a birthmark.