Autism spectrum disorder (ASD) is a neurodevelopmental disorder characterized with ritualized behavior, difficulties in communication/ social interaction, restricted interests, and sensitivity to external stimuli. The ASD has gained attention in recent years, however it’s still difficult in geropsychiatric setting to identify high-functioning ASD, especially when patients’ coping mechanisms are successful. Not to determine high-functioning ASD structure in older age can lead to wrong diagnosis and inappropriate treatment trials.

The aim of this presentation is to emphasize the importance of the evaluation of ASD-structure in old-age-psychiatry through the case study of a 65-years-old man.

One case report from the inpatient unit of a psychiatric clinic in Lower Saxony, Germany will be presented.

Case: The patient was referred to our acute-psychiatric-ward due to delusional thoughts, depressive symptoms and lorazepam dependency. Delusional disorder was diagnosed in the outpatient-setting since he had interpreted some external stimuli in an eccentric way. During the therapeutic process, some features of high-functioning ASD such as social difficulties, dislike of change and repetitive/restrictive habits were prominent. Developmental history of the patient and the Autism-Spectrum-Quotient-50 also supported the clinical diagnosis of the ASD. Delusional disorder was excluded, and the therapy organized according to the structure characteristics of the high-functioning ASD which yielded to significant amelioration of depressive symptoms and increased perceived life quality of the patient.

Although coping mechanisms of the patients can be successful, identifying high-functioning ASD-structure even in an old-age can be quite helpful in diagnostic/therapeutic processes. An elaborate discussion of the subject through contemporary literature will be presented.

No significant relationships.