This document provides an update on new peer-reviewed publications supporting the inclusion of Sensory Processing Disorder (SPD) in the DSM. It summarizes recent research in the areas of neuropathology, signs and symptoms, developmental trajectory, etiology, and treatment effectiveness for SPD based on Pennington's model of syndrome validation. Key findings include evidence of differences in brain function and sensory processing in individuals with SPD, validation of assessments for diagnosing SPD subtypes, studies demonstrating functional challenges associated with SPD, evidence for SPD from studies of non-human primates, and preliminary evidence that occupational therapy can effectively treat symptoms of SPD. The research advances the empirical validation of SPD as a diagnostic entity.
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