A lentigo is a benign skin growth that resembles a freckle. It is usually a tan or brown spot that is flat or only slightly raised. It can vary in size and shape and can occur as a singular lesion or as multiple lesions (lentigines). Lentigines have been classified into several different types depending on the characteristics, appearance, location, cause, and associations with other diseases or conditions.
Solar lentigines, frequently referred to as age spots or liver spots, are one of the most common types of lentigines. They are a result of chronic sun exposure and typically appear in sun exposed areas such as the face, shoulders, back, and hands. While mostly found in older adults with fair skin, it can also occur in younger people who have had significant sun damage or tanning bed use.