Acute and Transient Psychotic Disorder: Clinical Features in Children, Adolescents and Adults


Vilnius University, Vilnius, Lithuania


Introduction: First episodes of psychosis usually manifest at a young age. The analysis of clinical features of psychosis in various age groups is essential in order to make an accurate diagnosis and provide a timely treatment. The goal of this retrospective research is to investigate Acute and transient psychotic disorder’s peculiarities of children, adolescents and adults.

Methods: The medical records of 172 patients had been analyzed as part of the retrospective study. The study included patients, hospitalised at a Psychiatry ward of the LSMUL KK during the period of 2010-2014, with the first occurrence of the psychotic disorder and a F23 diagnosis (acute and transient psychotic disorder, ICD-10). Socio-demographic data, positive and negative symptoms had been analysed and compared among various age groups. The statistical analysis was conducted using IBM SPSS Statistics 22.0 and Excel 2010 programs.

Results: In a sample of 67 patients, 56.7% were females; the age mean – 22.63 years; the majority lived in urban areas (80.6%), and were secondary school/university students (49.3%). About one third of patients (34.3%) reported having family members with mental disorders and nearly half of subjects (44.8%) reported substance abuse. Most patients were outside of suicide risk factor (70.1%). There was no statistical significance between age and positive or negative symptoms. Half of patients (56.7%) had had hallucinations.  Auditory type of hallucinations was the most common type. Delusions manifested in 94.0% of patients.  The most common were delusions of persecution, reference, and delusion of poisoning.

Conclusions: 18-25 year old patients were more likely to live alone and therefore have less support (p = 0.009). Social isolation as a negative symptom occurred statistically significantly more frequent in the age group I rather than II or III (p = 0.018). The beginning of acute and transient psychotic disorder was gradual in age group I (p = 0.02). There was no statistical significance between age and positive or negative symptoms.