Shaken baby syndrome (also called intentional head injury or abusive head trauma) is brain damage that occurs when a baby is shaken, slammed, or thrown against an object. It is a form of child abuse that occurs when the baby's caregiver loses control.
Shaking a baby or striking a baby's head is always dangerous. Babies' heads are large in relation to their bodies, and their neck muscles are not well developed. If a baby is forcefully shaken, slammed, or thrown, his or her head will jerk back and forth uncontrollably. The child’s skull can hit the brain with force. When the inside of the skull forcefully strikes the brain, it can cause: