In the case of a loss of intelligence, the disorders of the brain are irreparable, so that it cannot be cured. Targeted training and training tailored to the individual needs of those affected can help to improve cognitive performance. These lead to an increase in the general mental abilities as well as stability of the acquired knowledge. Normal intelligence cannot be achieved despite these efforts.
The aim of therapy is to improve the existing skills as much as possible so that daily tasks can be partially or almost completely taken over by the person concerned.