Fans Concerned After Rapper Nelly’s Eyes Roll to Back of His Head in Bizarre Performance. ... The St. Louis native could be seen rolling his eyes in the back of his head while crooning out the tune.

In addition, most human skulls have a natural prominence on the back of the head. This bump, called an inion, marks the bottom of the skull where it attaches to the neck muscle. 10 causes of bumps ...

Your eyes can roll back into your head due to several causes. The most common causes include a seizure, a fainting spell, or a condition called nystagmus.