Recovery of any type of traumatic brain injury requires time and patience. A mild traumatic brain injury takes less time to heal, with many victims recovering from concussions within three months of the injury.
However, severe traumatic brain injuries are hard to predict. This is because they tend to cause multiple points of significant damage to the brain’s various centers. For example, victims in comas are less likely to wake up the longer that they are in a coma.
The severity of the effects of the traumatic brain injury directly correlates with the amount of time needed for them to make a full recovery.
In some cases, especially those with nerve damage, the victim will never fully recover from their injury. They may regain some of their former abilities, but will always be impaired by the damage caused by the brain injury.