Nevos

Nevos, also known as moles, are small, dark spots on the skin that are typically harmless. They are formed when pigment-producing cells, called melanocytes, become clustered together. Nevi can vary in size, shape, and color, ranging from light brown to black. They are most commonly found on areas of the body that are exposed to the sun, such as the face, neck, and back.

There are several types of nevi, including congenital nevi, which are present at birth, and acquired nevi, which develop later in life. Congenital nevi can be further classified as junctional nevi, compound nevi, and combined nevi, based on the depth of the pigment cells in the skin. Acquired nevi can be either benign or malignant. Benign acquired nevi are usually small and do not change in appearance over time. Malignant acquired nevi, on the other hand, can grow rapidly and may be a sign of skin cancer.

Nevos are typically harmless, but it is important to monitor them for any changes in size, shape, or color. If a nevus becomes itchy, bleeds, or develops a raised border, it may be a sign of skin cancer and should be evaluated by a healthcare professional. Regular skin examinations by a dermatologist can help detect any potential issues early, when they are most treatable.