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When to Diagnose?<br />

Progressive Stages of Illness in Schizophrenia<br />

Premorbid<br />

Prodromal<br />

Onset/<br />

Deterioration<br />

Residual/Stable<br />

Healthy<br />

Margin of Prevention<br />

Worsening<br />

Severity of<br />

Signs and<br />

Symptoms<br />

Abnormal Brain<br />

Development<br />

Sensitization by dopamine (?)<br />

Excitatory neurotoxicity of glutamate (?)<br />

Neurochemical<br />

Dysregulation<br />

Neurodegeneration<br />

Gestation/Birth 10 Puberty 20 30 40 50<br />

Years<br />

Adapted from: Lieberman JA, et al. Biol Psychiatry. 2001;50(11):884-897.

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