27Definition—mental impairment

27 Definition—mental impairment mental impairment includes senility, intellectual disability, mental illness, brain damage and severe personality disorder. mental illness is an underlying pathological infirmity of the mind, whether of long or short duration and whether permanent or temporary, but does not include a condition (a reactive condition) resulting from the reaction of a healthy mind to extraordinary external stimuli. (3) However, a reactive condition may be evidence of a mental illness if it involves some abnormality and is prone to recur.