If you have a lot of moles on your body, you need to check your skin often for changes and warning signs associated with skin cancer. To accomplish this, the American Academy of Dermatology recommends the following: regularly inspect your skin, evaluate all of your moles; look for changes or unusual looking moles; see a dermatologist if any moles bleed, itch, or change; avoid sunbathing or use of a tanning bed; apply sunscreen when outdoors to help prevent sunburn; and see a dermatologist if you have 100 or more moles. American Academy of Dermatology, August 2016