How ill is he?

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Symptoms of chronic/serious mental illness:

Acute, "positive" symptoms (at least one of these usually present, at least during an exacerbation of illness):

Distorted perceptions; loss of contact with reality;
Delusions.
Hallucinations.
Disordered, disorganized and confused thinking.
Unstable and inappropriate emotions.
Bizarre behavior; impaired judgment.
Residual ("negative") or deficit symptoms (several of these usually present most of the time):

Vulnerability to certain kinds of stress.
Extreme dependency (sometimes combined with hostility).
Difficulty with interpersonal relationships.
Deficient coping skills.
Poor transfer of learning; fear of new situations.
Restricted emotional response and lack of enjoyment.
Reduced speech and impaired abstract thinking.
Reduced ability to pay attention; slowness.
Apathy; lack of motivation; phobic avoidance of situations.
Sensitivity to over- (and under-) stimulation

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