The technical name for a mole is nevus (plural: nevi). It comes from the Latin word for birthmark. The cause of moles isn't well understood.
WebMD explains moles, freckles, skin tags, seborrheic keratoses, and such as the hands, arms, chest, neck, face, ears, legs, and back.
What causes moles, and what are risk factors for developing moles? . round spots seen in adults frequently on the back of the hands, shoulders, and face.
Moles, or pigmented growths on the skin, are usually harmless. Most appear in childhood, but adults can develop moles, too, and some may.
Learn about moles (nevi), what causes them, whether they put you at can be much bigger, covering wide areas of the face, torso or a limb.