Summary
Background
Fregoli syndrome is a rare clinical condition with a variable presentation: from a simple solitary psychiatric entity to an epiphenomenon of other mental disorders (most frequently schizophrenia). Occasionally, Fregoli syndrome may occur as a symptom that dominates the clinical history of organic diseases, which are often undiagnosed.
Clinical case
We report the clinical case of a woman who experienced delusional false recognition, meeting the criteria for Fregoli Syndrome, triggered by an acute pneumonia associated with urinary infection. This is an example of how an organic pathology can hide itself behind a psycho-pathological event.
Conclusions
According to our experience, it is important to manage this psychiatric disorder with correct differential diagnosis, especially in those cases in which the psycho-pharmacological treatment alone does not give satisfactory results in clinical improvement.