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Diseases reference index «Mongolian blue spots»

Mongolian spots are flat, blue, or blue-gray skin markings that commonly appear at birth or shortly thereafter.

See also: Rashes

Causes

Mongolian blue spots are common among darker skinned persons, such as those who are of Asian, East Indian, and African descent.

Symptoms

Mongolian spots are noncancerous skin markings and are not associated with disease. The markings may cover a large area of the back.

Occasionally, Mongolian blue spots are mistaken for bruises, which can raise a question about possible child abuse. It is important to recognize that Mongolian blue spots are birthmarks, NOT bruises.

Symptoms include:

  • Blue or blue-gray spots on the back, buttocks, base of spine, shoulders, and other body areas
  • Flat area with irregular shape and unclear edges
  • Normal skin texture
  • The spots are usually 2 - 8 centimeters wide

Exams and Tests

No tests are needed. Your doctor can diagnose this condition by looking at the skin.

Treatment

No treatment is necessary or recommended.

Outlook (Prognosis)

The spots often fade in a few years and are almost always gone by adolescence.

Possible Complications

There are no complications.

When to Contact a Medical Professional

All birthmarks should be examined by a health care provider during the routine newborn examination.

Alternative Names

Mongolian spots; Congenital dermal melanocytosis; Dermal melanocytosis

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