Head injuries are usually split into two categories: Brain Injury and Minor Head Injury. Brain injuries are on a much larger scale than minor head injuries, however can still range from minor to severe.
Severe brain injuries can be life changing whereas minor brain injuries can result in short term symptoms, such as emotional, behavioral or physical. The amount of compensation you receive from a brain injury depends on which category your injury resides to, whether it be a minor, moderate or severe.
On the other hand, minor head injuries are minimal but again the level of compensation would depend on the severity of the injury. Unlike brain injuries, compensation for minor head injuries are calculated by what the injury is itself, the length of time taken to recover and if there are any ongoing symptoms, such as headaches, after recovery.