Stroke can cause major differences in behavior. A regular motor function can be lost because a certain part of the brain is damaged. This would be considered a deficit disorder. The other kind of disorder that can appear is called a productive disorder. This one is tricky because they look like many other disorders that people have without a Stroke.

Deficit disorderss are mood or behavior or functions that are lost such as aphasia, amnesia, agraphia, explecia, neglect, etc. It appears in the Survivor's ability that he/she was once able to exercise but can no longer control the function.

Productive disorder symptoms include: delusions, hallucinations, depression, mania, personality disorders, anxiety, excessive compulsive disorder and sexual deviations that occur for the first time after the stroke in a person that never had this kind of behavior before.

The degree of disability depends upon several factors: age at the onset of the stroke, whether the stroke is unilateral or bilateral, genetic vulnerability to a specific behavior disorder, gender, pre-morbid personality, degree of mental stress, coping skills and social support.