Mongolian spots in the newborn: do they mean anything?Neonatal Netw. 2005 Jan-Feb; 24(1):31-3.NN
Mongolian spots are the most frequently seen birthmarks in infants. They have almost universally been regarded as benign cutaneous manifestations that have no clinical significance. Recently, however, there have been studies suggesting that Mongolian spots manifest more often in children with certain inborn errors of metabolism, including mucopolysaccharidosis and GM1 gangliosidosis.