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What is congenital melanocytosis in newborns?

ANSWER

Congenital melanocytosis, previously called Mongolian spots, is a common condition. The spots are flat, gray-blue in color (almost looking like a bruise), and can be small or large. They are caused by some pigment that didn't make it to the top layer when baby's skin was being formed. They are harmless and usually fade away by school age.

SOURCES: 

"The skin," Darmstadt, G. and Sidbury, R. Nelson Textbook of Pediatrics, 17th edition. Behrman, R., Kliegman, R., and Jenson, H. (eds.), Saunders, 2004.

Mayo Clinic.

Reviewed by Dan Brennan on July 19, 2019

SOURCES: 

"The skin," Darmstadt, G. and Sidbury, R. Nelson Textbook of Pediatrics, 17th edition. Behrman, R., Kliegman, R., and Jenson, H. (eds.), Saunders, 2004.

Mayo Clinic.

Reviewed by Dan Brennan on July 19, 2019

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When does cradle cap (seborrhea) usually show up in babies?

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