Paraphrenia as a psychopathological construct: a case with systematized delusion and depressive symptoms

Background:

Paraphrenia, as originally described by Kraepelin [1], refers to chronic psychotic states characterized by highly systematized delusions, rich imaginative content, and relative preservation of personality and cognitive functioning. Although it is not included in current diagnostic classifications, it remains a valuable psychopathological construct for understanding certain chronic delusional presentations that do not fully meet criteria for schizophrenia or delusional disorder. Revisiting this concept may contribute to a more nuanced clinical and structural understanding of psychosis and may be particularly relevant in complex cases with atypical or mixed clinical features. In this sense, it provides a useful framework to explore the organization of delusional experience beyond strictly operational diagnostic systems.

Aim:

To analyze the clinical and psychopathological features of a chronic delusional presentation consistent with paraphrenia, and to discuss its relevance for diagnostic formulation, differential diagnosis, and clinical management in contemporary psychiatric practice.

Methods:

We report a detailed clinical case, including longitudinal psychopathological assessment and evaluation of treatment response during inpatient care. Particular attention was given to delusional structure, thematic organization, affective symptoms, behavioral manifestations, degree of insight, and functional outcome over time. Clinical data were obtained through direct observation, repeated patient interviews, and comprehensive review of medical records, allowing for an in-depth qualitative analysis of symptom evolution.

Results:

We present the case of a 55-year-old man with longstanding schizotypal personality traits, who progressively developed a chronic, highly systematized delusional system with multiple interconnected themes, including messianic, grandiose, persecutory, and magical-fantastic elements. The patient exhibited complex symbolic interpretations, frequent misidentifications, and persistent visual and cenesthetic hallucinations, in the absence of formal thought disorder or significant cognitive impairment.

In addition, he presented clinically relevant depressive symptoms, including low mood, apathy, anhedonia, reduced motivation, and marked social withdrawal, which contributed to functional decline and increased vulnerability. Following treatment discontinuation, he experienced a clear clinical decompensation characterized by intensification and expansion of delusional content, increased behavioral disorganization, and a suicide attempt occurring in a delusional context, which required hospital admission.

During hospitalization, treatment with risperidone depot 100 mg/ month, brexiprazol 2 mg/day and duloxetina 120 mg / day was initiated, leading to progressive improvement in affective symptoms, reduction in emotional distress, and partial encapsulation of the delusional system. This was associated with recovery of baseline functioning, improved behavioral stability and better adherence to follow-up and outpatient care.

Conclusions:

This case illustrates key features of classical paraphrenia, including high delusional systematization, imaginative richness, and preservation of formal thought and cognitive functioning, supporting its differentiation from schizophrenia [2,3]. The coexistence of depressive symptoms adds psychopathological complexity without substantially modifying the underlying delusional organization.

A psychopathological approach may complement current diagnostic systems and improve clinical characterization, differential diagnosis, and therapeutic decision-making in complex psychotic presentations. These findings support the continued relevance of paraphrenia as a descriptive and conceptual tool in modern psychiatry.

References

Kraepelin E. Psychiatrie: Ein Lehrbuch für Studierende und Ärzte. Leipzig: Barth; 1913.
Berrios GE. The insanity of the third age: a conceptual history of paraphrenia. J Nutr Health Aging. 2003;7(6):394–399.
Sarro S. In defense of paraphrenia. Rev Psiquiatr Fac Med Barna. 2005;32(1):24–29.