The skin of infants with blue baby syndrome may take on a bluish tint, so it is harder to detect in darker skinned babies. Often times, the symptoms resemble those experienced when they have other infections, such as diarrhea or vomiting and shortness of breath. If your infant is exhibiting these symptoms, doctors can test for the syndrome and can administer a medicine called methylene blue which can return the baby’s blood to normal.
I was one and I'm 68 now.