There are several factors, both genetic and environmental, that may put you at risk for lentigo maligna melanoma. Since lentigo maligna melanoma generally affects older people, your risk is increased if you are over the age of 50. If a family member has had melanoma, you are at a higher risk for the disease. Other genetic risk factors include having a lot of moles or having any large or irregular moles. Pregnancy and long-term use of oral contraceptives may also increase the risk for lentigo maligna melanoma, though these factors are less significant. Environmental risk factors may also affect the development of lentigo maligna melanoma. Increased sun exposure, especially prolonged exposure over many years, increases your risk. Because of this, people who live in very sunny or warm areas have a higher risk for the disease.