Aggressive challenging behavior has been reported in adults with intellectual disability and is often treated with antipsychotic drugs. This study researched the effects of antipsychotics in the role of aggressive behavior in adults with intellectual disability, and found no promising results.

References and Resources
Tyrer P, et al. Risperidone, haloperidol, and placebo in the treatment of aggressive challenging behavior in patients with intellectual disability: a randomized controlled trial. Lancet 2008; 371: 57-63.

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