Formation: Melanocytic nevi, commonly known as moles, form due to the clustering of melanocytes, which are pigment-producing cells in the skin.
Color: Moles typically appear brown or black, and their color can vary in intensity.
Size and Shape: Moles can be flat or raised, round or irregular in shape, and range in size from less than 1 millimeter to several centimeters.
Location: Moles can appear anywhere on the body, including the face, neck, torso, and limbs.
Quantity: An individual may have multiple moles, which result from a combination of genetic and environmental factors.
Formation: Age spots, or hyperpigmentation, usually result from sun exposure, hormonal changes, skin aging, or certain medical conditions, while melanocytic nevi are caused by an increase in melanocytes.
Color: Age spots can range from light brown to dark brown, while melanocytic nevi are typically darker and closer to black.
Size and Distribution: Age spots can cover larger areas and are often found in specific regions, such as the face (melasma) or pregnancy-related spots, whereas melanocytic nevi are generally smaller and may be distributed more randomly.
Shape and Borders: Melanocytic nevi usually have well-defined edges, whereas age spots often have more blurred borders.
Development and Changes: Once formed, moles usually remain stable in size and shape; age spots may darken or spread over time due to factors like sun exposure.
Treatment: The treatment of melanocytic nevi typically requires evaluation by a medical professional and may involve laser therapy or surgical removal; age spots can be treated with whitening products, chemical peels, or laser treatments.