What is the meaning of 'nevus'?

The term 'nevus' specifically refers to a mole or a pigmented skin blemish. Nevi are typically benign growths on the skin that can vary in color, size, and shape. They arise from melanocytes, the cells responsible for producing the pigment melanin which gives color to the skin. Understanding this term is essential in dermatology and healthcare, as it helps professionals identify and differentiate benign moles from potentially malignant lesions.

The other options refer to different medical terms or concepts. The type of inflammation pertains to a bodily response to injury or infection, while a leukocyte is a type of white blood cell involved in immune response. The final option suggests a feeling of excessive admiration for oneself, which is not relevant in a medical context. Thus, recognizing 'nevus' as a mole aligns perfectly with its established definition in medical terminology.