Lentigo Simplex

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Images of Lentigo Simplex


Lentigo simplex is a type of colored (pigmented) lesion that is not caused by sun exposure, although it looks like the freckle-like condition caused by sun exposure called solar lentigo. In both conditions, an increased number of pigment-producing cells (melanocytes) is 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 also can 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.

Who's at risk?

Lentigo simplex may occur in people of all ages. The lesions usually appear first in early childhood, but they can also be present at birth or develop later in life.

Signs and Symptoms

Lentigo simplex can occur anywhere on the body, including areas that are not exposed to sunlight. They appear as brown-to-almost-black, small spots, usually 3 mm or smaller in diameter. The edges of the lesions may be smooth or somewhat jagged with even distribution of color.

Self-Care Guidelines

None necessary.

When to Seek Medical Care

See your child's doctor for evaluation of any pigmented lesion if you are not sure what it is.

Treatments Your Physician May Prescribe

Lentigo simplex is a non-cancerous (benign) lesion. The physician may recommend:

  • Periodic follow-up evaluations.
  • Surgical removal of single lesions that may be difficult to distinguish from malignant lesions (melanomas).

Trusted Links

Clinical Information and Differential Diagnosis of Lentigo Simplex


Bolognia, Jean L., ed. Dermatology, pp.981, 1761-1763. New York: Mosby, 2003.

Freedberg, Irwin M., ed. Fitzpatrick's Dermatology in General Medicine. 6th ed, pp.863, 882-884. New York: McGraw-Hill, 2003.