[Psychosis - clinical differential diagnosis]

Area of Science:

• Psychiatry
• Neurology
• Immunology

Background:

• Psychotic symptoms are common in both psychiatric and organic disorders.
• Accurate classification based on ICD 10 is essential for differential diagnosis.
• Distinguishing primary/secondary psychotic symptoms aids in identifying underlying conditions.

Purpose of the Study:

• To outline the differential diagnostic evaluation of psychotic syndromes.
• To categorize potential underlying diseases causing psychotic symptoms.
• To emphasize the importance of distinguishing between psychiatric, organic, and autoimmune etiologies.

Main Methods:

• Review of ICD 10 classification for psychotic disorders.
• Categorization of differential diagnoses into three main groups: psychiatric, organic, and autoimmune diseases.
• Emphasis on clinical evaluation including medical history and physical examination.

Main Results:

• Psychotic disorders are classified into psychiatric diseases (e.g., drug-induced, affective, personality disorders), organic diseases (e.g., dementia, delirium, metabolic), and autoimmune diseases (e.g., encephalitides).
• Differential diagnosis requires careful consideration of these three major categories.
• Autoimmune diseases, particularly encephalitides, are increasingly recognized as a cause of psychosis.

Conclusions:

• Comprehensive medical history, physical examination, and organic diagnostics are key to correct diagnosis and therapy.
• Differential-diagnostic classification and identification of organic causes are vital components of psychiatric care.
• Collaboration with other medical specialties is often necessary for optimal patient management.