Slide show: Sun damage

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Solar lentigines on the back

Solar lentigines tend to become more numerous with repeated sun exposure and with advancing age. Sometimes they develop in large numbers, as seen on this man's upper back. They're different from freckles in that freckles are red or light brown, are smaller in size, tend to develop earlier in life, and usually lighten in winter months.

1. Habif TP. Light-related diseases and disorders of pigmentation. In: Habif TP. Clinical Dermatology: A Color Guide to Diagnosis and Therapy. 5th ed. Philadelphia, Pa.: Mosby; 2009. http://www.mdconsult.com/book/player/book.do?method=display&type=aboutPage&decorator=header&eid=4-u1.0-B978-0-7234-3541-9..X0001-6--TOP&isbn=978-0-7234-3541-9&uniq=178231315#lpState=open&lpTab=contentsTab&content=4-u1.0-B978-0-7234-3541-9..00028-6%3Bfrom%3Dtoc%3Btype%3DbookPage%3Bisbn%3D978-0-7234-3541-9. Accessed Jan. 13, 2010.
2. Helfrich YR, et al. Overview of skin aging and photoaging. Dermatology Nursing. 2008;20:177.
3. de Giorgi V, et al. Melanocytic aggregation in the skin: Diagnostic clues from lentigines to melanoma. Dermatology Clinics. 2007;25:303.
4. Duncan KO, et al. Epithelial precancerous lesions. In: Wolff K, et al. Fitzpatrick's Dermatology in General Medicine. 7th ed. New York, N.Y.: The McGraw-Hill Companies; 2008. http://accessmedicine.com/content.aspx?aID=2981344. Accessed Jan. 13, 2009.
5. Goldstein BG, et al. Melasma. http://www.uptodate.com/home/index.html. Accessed Jan 13, 2010.
6. Nicolaidou E, et al. Origin, clinical presentation and diagnosis of facial hypermelanoses. Dermatologic Clinics. 2007;25:321.
7. Melanoma skin cancer. American Cancer Society. http://documents.cancer.org/170.00/170.00.pdf. Accessed Jan. 20, 2010.