What causes lentigo Senilis?
What causes lentigo Senilis? Solar lentigo is caused by exposure to ultraviolet radiation from the sun. This type is common in people over age 40, but younger people can get it, too. It happens when UV radiation causes pigmented cells called melanocytes in the skin to multiply. What is the difference between a nevus and lentigo? Lentigo and junctional nevus can look like a freckle. Actinic lentigo does not darken with sun exposure and is acquired later in life. In contrast, freckles darken after sun exposure and are present from early childhood. Lentigo simplex is acquired in childhood, but the...