Any disorder excluding dimensia resulting from stroke, trauma, infections or degenerative diseases, such as Alzheimer’s disease classified in the Diagnostic and Statistical Manual of Mental Disorders (DSM), published by the American Psychiatric Association, most current as of the start of the period of disability. Such disorders include but are not limited to psychotic, emotional, or behavioral disorders, or disorders relatable to stress or to substance abuse or dependancy. If the DSM is discontinued or replaced, these disorders will be those classified in the diagnostic manual then in use by the American Psychiatric Association as of the start of the period of disability.