Social Communication Disorder (SCD) is a new DSM-5 diagnostic category poorly understood by clinicians. We describe a case series of four individuals diagnosed with SCD to identify common characteristics and differences in presentations of the disorder. All cases had deficits in the area of social communication, and sub-threshold level of restricted and repetitive behaviours, not sufficient to meet criteria for Autism Spectrum Disorder (ASD). All cases presented with at least one mental health co-morbid condition. There are significant overlaps in clinical presentation between SCD and ASD. It is imperative that accurate diagnostic tools and effective intervention approaches of SCD be developed.
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