Injuries, particularly to the head, caused by violently shaking a child. The syndrome is the most common cause of infant death from head injuries and is considered a serious form of child abuse. Shaken baby syndrome is encountered most often in 2-3 month-old infants. The syndrome has distinctive features including haemorrhage (bleeding) into the retina of the eye, haemorrhage and swelling of the brain, patterned bruising and fractures (breaks) of the child's ribs or bones. Deaths from the syndrome are high. Brain damage, visual problems, psychological consequences and learning difficulties are common in those that survive.