Diagnostic Considerations in Paranoia and Aggression

During a psychological evaluation, a 30-year-old man named Christopher is assessed for his increasingly aggressive behavior and feelings of paranoia. He reports that he has been suspicious of others' motives and frequently experiences intense anger outbursts. This has led to conflicts in both personal and professional relationships. Christopher has no history of substance abuse and denies any traumatic incidents that could explain his symptoms. His functioning in daily life has become impaired, alarming both him and his family. Based on these symptoms, which diagnostic consideration is most likely relevant to Christopher's case?