Of course, Ritalin is not perfect and you cannot expect a miracle. Stimulants don't work for all ADHD children and nothing will transform a problem child into an angel. What you must look for is significant improvement worth the effort and the risk. That's all, just significant improvement.
Head injuries include both injuries to the brain and those to other parts of the head, such as the scalp and skull. Head injuries can be closed or open. A closed (non-missile) head injury is where the dura mater remains intact. The skull can be fractured, but not necessarily.
Traumatic brain injuries (TBI) account for thousands of deaths each year in the U.S. As well, significant numbers of people suffer temporary and permanent disability due to brain injury. Head injury does not necessarily mean brain injury. Bleeding in the brain usually occurs at the time of injury and can continue increasing pressure within the skull.