The 'Introduction' of Strömgren's 'Episodic Psychoses' offers a detailed overview of the historical context and classification of episodic psychoses, presenting a critical analysis of their origins and evolution.
Inspired by August Wimmer's work on psychogenic psychosis, Strömgren highlights the connections between episodic psychoses and both degeneration and psychogenic psychoses, illustrating their role as a transitional category in psychiatric classification.
The text underscores ongoing debates within international psychiatry regarding the definitions and classifications of these disorders, reflecting the complexities and challenges in achieving a unified understanding.