Журнал клинических и экспериментальных дерматологических исследований
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The Spectrum of Ideation in Patients with Symptoms of Infestation: From Overvalued Ideas to the Terminal Delusional State

Gabrielle E. Brown, Eric Sorenson, Mona Malakouti, Argentina Leon, Jason S. Reichenberg, Michelle Magid, Josephine L. Howard, Jenny E. Murase and John Y.M. Koo

Delusional infestation (DI) is a type of monosymptomatic hypochondriacal psychosis characterized by the steadfast belief that one is infested with living organisms or inanimate material in the absence of objective proof. Although DI is generally regarded as a single psychotic phenotype characterized by either the presence or absence of a delusion, our experience has been that patients with DI present with varying levels of severity represented by various phenotypes along a continuum. Distinguishing where a particular patient presents on this spectrum has allowed us to modify our approach with greater sophistication and thereby optimize management. Our aim is to describe for the first time in dermatology the concept of the DI continuum with support from the psychiatric literature, and to provide practical therapeutic recommendations for each phenotype in the spectrum.