Many babies are born with a Mongolian spot, so if your child has one, it is not a cause for concern. Depending on genetics, gender, and ethnicity, they can end up in different places on your body. Most are found at the end of the spine.

This unique birthmark is caused by a build-up of pigment-producing cells just beneath the skin and is completely harmless. Mongolian spots usually fade between the ages of 2 and 6, but in a rare 1 percent of the population, this type of birthmark is permanent.

Mongolian spots are a pigmentary disorder called congenital dermal melanocytosis and usually appear blue, gray, or green in color.

Mongolian spots are a sign of good luck, an indication that you have been blessed with good fortune.