Refractory Homicidal Ideation in a Young Adult Male With High-Functioning Autism Spectrum Disorder and Schizophrenia.

Persistent homicidal ideation (HI), while not common among psychiatric disorders, can occur within multiple diagnoses in the Diagnostic and Statistical Manual of Mental Disorders. There is a growing global and national concern for homicide and homicide-related deaths. In this case report, we discuss refractory homicidal ideation in an 18-year-old male with the diagnoses of autism spectrum disorder (ASD) and schizophrenia and a history of Tourette's syndrome and highlight the interplay of comorbidities and challenges in effective management and treatment.