Juan Vega is a 24-year-old inmate serving a two-year sentence for theft. He has been diagnosed with antisocial personality disorder. He displays irritability, hostility toward other inmates, and manipulative behavior toward staff. His crime and behavior in prison, including impulsiveness, aggression, and lack of remorse, are signs of antisocial personality disorder. Working with him may be difficult due to his manipulation and deception to get what he wants. Strategies for managing him include psychotherapy, medication, and considering substance abuse issues.