Diastasis recti

Diastasis recti, a normal condition in newborns, is a separation of the left and right side of the rectus abdominis muscle, which is the muscle covering the front surface of the abdomen. A diastasis recti is seen as a large ridge running down the midline of the abdomen from the bottom of the breastbone to the navel which appears whenever an infant strains or attempts to sit up.