18 month old son has bruising at the base of his spine and going upwards along the vertabre. He has a Mongolian birthmark that is blue and grey in his butt crack but this is new and black grey in color. What is this and does a Mongolian grow/change with age?
Hi Dear Welcome to the Chat Doctor, It may some bruise due to injury. Let it be checked by the pediatrician. Hope the query is answered. Thanks