A lentigo on the lip is a flat, light brown spot, usually found on the lower lip, where sun exposure is more common. The two dark brown, flat marks are typical of lentigos.
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Lentigo Simplex  Information for adults

Picture of Lentigo Simplex: A lentigo on the lip is a flat, light brown spot, usually found on the lower lip, where sun exposure is more common. Divider line
A lentigo on the lip is a flat, light brown spot, usually found on the lower lip, where sun exposure is more common.
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Overview
Lentigo simplex is a type of color-containing (pigmented) lesion not caused by sun exposure, which looks like the freckle-like condition (lentigo) caused by sun exposure (solar lentigo). In both conditions, an increased number of pigment-producing cells (melanocytes) are present. Lentigo simplex can occur anywhere on the body, including areas that are not exposed to sunlight. Multiple lentigos are associated with several inherited syndromes, but lentigo simplex can also occur as a single lesion. Single lesions often develop on the lips or on the gums. Lesions may be caused by some forms of ultraviolet light therapy. If this is the case, the lesion may be seen as identical to those caused by exposure to sunlight.
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Last Modified: 22 Dec 2008
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