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Jonathan D. Santoro; Mellad M. Khoshnood; Lina Nguyen; Benjamin N. Vogel; Natalie K. Boyd; Kelli C. Paulsen; Michael S. Rafii – Journal of Autism and Developmental Disorders, 2025
Purpose: Down Syndrome Regression Disorder (DSRD) is a diagnosis of exclusion. Psychiatric and neuroimmunologic etiologies have been proposed although the exact etiology remains unknown. This study sought to review non-DSRD diagnoses at a large quaternary medical center specializing in the diagnosis of DSRD and compare clinical characteristics…
Descriptors: Clinical Diagnosis, Alternative Assessment, Down Syndrome, Etiology