|Harlequin Color Change|
#4: Harlequin color change
Harlequin color change is a dramatic but benign phenomenon in which the color on 1/2 (downward) of an infant turns deep red, while the upper half is pale. Usually this color change is abrupt and lasts between 30 seconds and 20 minutes, then it resolves. Up to 19% of infants undergo this color change which occurs between the 2nd and 5th day of life. It is attributed to a temporary imbalance in autonomic regulation and it is more common among low-birth-weight infants.
The fact that the baby did not have IV lines or oxygen or evidence of being in an ICU pointed to a less serious cause and was the "hint".
The other conditions would indicate a life-threatening condition.