REFERENCES

1. "acanthosis nigricans " at Dorland's Medical Dictionary
2. Habif, Thomas P. (2009). Clinical dermatology (5th ed.). Edinburgh: Mosby. ISBN  978-0-7234-3541-9 .
3. Thomas B. Fitzpatrick; et al. (2005).Fitzpatrick's color atlas and synopsis of clinical dermatology (5th ed.). New York: McGraw-Hill Medical Pub. Division.ISBN  0-07-144019-4 .
4. Extensive segmental acanthosis nigricans form of epidermal nevus. Anne C de Waal MD, Michelle M van Rossum MD PhD, H jorn Bovenschen MD PhD, Dermatology online journal 16(6): 7