Moles can be rough, flat, or raised. They can exist at birth or appear later. Rarely, Moles can become cancerous. They often appear as small, dark brown spots and are caused by clusters of pigment-forming cells (melanocytes). Moles appear in early childhood and during the first 20 years of life. It is normal for a person to have between 10 to 40 moles by adulthood. In most cases, moles are benign and can be removed purely for aesthetic purposes. Expert dermatologists at Surgery Care can provide you with treatments for all your mole removal needs.