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Review
. 2022 Nov 4;3(1):sgac068.
doi: 10.1093/schizbullopen/sgac068. eCollection 2022 Jan.

Hallucinations in the Child and Adolescent "Ultra-High Risk" population: A Systematic Review

Michelangelo Di Luzio  1 , Maria Pontillo  1 , Cristina Di Vincenzo  1 , Domenica Bellantoni  1 , Francesco Demaria  1 , Stefano Vicari  1   2
Affiliations
Review

Hallucinations in the Child and Adolescent "Ultra-High Risk" population: A Systematic Review

Michelangelo Di Luzio et al. Schizophr Bull Open. .

Abstract

Background and hypothesis: "Ultra-high risk" for psychosis young adults are assumed to be at higher risk of developing a psychotic spectrum disorder. Predominantly, the ultrahigh-risk population is aged 18-35 years, but it may also include younger children and adolescents. Individuals in this population experience psychosis prodromes in the form of attenuated or brief psychotic symptoms (particularly perceptual abnormalities). Albeit diagnosis is made via structured interviews, such measures fail to sufficiently assess the precise form and content of perceptual abnormalities, especially as they manifest in children and adolescents.

Study design: The present study involved a systematic review of the literature on perceptual abnormalities (particularly hallucinations) in ultrahigh-risk children and adolescents.

Results: The analysis reviewed five studies and drew conclusions about the perceptual abnormalities (ie, hallucinations) experienced by the study samples, focusing on form, content, and associations with other symptoms. Of note, 2 of the investigated studies suggested a relationship between hallucinations and experiences of childhood trauma.

Conclusions: The transition to psychosis and experiences of childhood trauma could correspond to different types of hallucinations in ultrahigh-risk children and adolescents. This knowledge could improve the identification of prodromal states in the young, ultrahigh-risk population.

Keywords: UHR; perception; prodromes; psychosis; transition; trauma.

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