Hello, I'm an expert in dermatology with a focus on pediatric skin conditions. I'd be happy to help answer your question about Mongolian spots.

Mongolian spots are a common type of birthmark that are typically found in individuals with Asian, African, Latin American, or Native American heritage. They are characterized by flat, blue-gray areas of skin that are usually located on the buttocks, lower back, or other parts of the body.

Mongolian spots are caused by a collection of pigmented cells called melanocytes in the deeper layers of the skin. They are generally harmless and often fade as a child grows. In fact, many Mongolian spots completely disappear by the time a child is five years old. However, in some cases, they may persist into adulthood, although they tend to become less noticeable over time.

It's important to note that while Mongolian spots are generally not a cause for concern, any changes in the size, shape, color, or appearance of a birthmark should be brought to the attention of a healthcare provider to rule out other potential skin conditions.

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Mongolian spots are present at birth, and most of them fade (at least somewhat) by age two. Most have completely disappeared by age five. If Mongolian spots remain at puberty, they are likely to be permanent. Fewer than five percent of children with Mongolian spots still have any by adulthood.read more >>