The occurrence of hair growth on a nevus, commonly known as a mole, is a relatively frequent phenomenon. These skin lesions are clusters of melanocytes, cells responsible for producing melanin, the pigment that gives skin its color. A hairy nevus simply indicates the presence of hair follicles within the mole’s structure. The hair may be coarse, dark, and more noticeable than surrounding hair, or it may be fine and less apparent.
Hairs emanating from a mole are generally considered benign and are not inherently indicative of malignancy. In some cultures, a hairy nevus is even viewed as a sign of good luck. From a histological perspective, the presence of hair follicles suggests that the mole is well-differentiated and has been present for an extended period, increasing the likelihood that it is a stable and non-cancerous lesion. Concerns primarily arise if the mole exhibits other suspicious characteristics, such as rapid growth, irregular borders, changes in color, itching, or bleeding.