Demo Chapter – Onset and Duration of Symptoms

Onset and Duration of Symptoms (5)

• Onset:
  • The onset of symptoms depends on the cause and may be acute or subacute.
    • Psychiatric:
      • Mood disorder.
      • Psychotic disorder.
    • Medical:
      • Neurotoxin exposure.
      • Infection.
      • Insult to brain.
• Duration:
  • The course of the symptoms also depend on the cause.
    • Can be transient.
    • Can be chronic.
      • Often seen in patients with schizophrenia.

(5) Moore, D. P. & Jefferson, J. W. (2004). Catatonia. In handbook of medical psychiatry, 2nd ed. St. Louis, mo: mosby, pp. 292-293.