Because crippling conditions are usually the result of brain injury, a consequence is less intellectual capacity. There is a higher incidence of mental retardation among people with cerebral palsy, but the connection between this condition and mental retardation is not absolute. Other conditions such as spina bifida, muscular dystrophy or convulsive disorders generally have no connection with levels of intelligence. Conditions like Epilepsy and Tourette Syndrome indicate a predisposition toward mental illness. People with these conditions are no more or less disposed to mental illness than those without.
Arthritis is a disease of the elderly.
It is found in all ages. This is a condition caused by damage to the brain before, during, or after birth. It is chiefly characterized by motor disorder. It is not progressive but is not considered curable, although physical therapy can be helpful in improving comfort and mobility. This is a symptom of a brain disorder that leads to seizures.