Common symptoms of oppositional defiant disorder in adults include a pattern of defiant, hostile and negative behavior that spans at least six months, explains PsychCentral. Individuals often lose their temper quickly, deliberately annoy others, blame others for misbehavior and mistakes and act spiteful or vindictive.
Many adults with oppositional defiant disorder exhibit anger and resentment toward others, become easily annoyed and engage in constant arguments with other individuals, according to PsychCentral. A combination of at least four symptoms lasting more than six months is evaluated to diagnose the disorder.
People with oppositional defiant disorder often refuse to comply with requests, exhibit frequent temper tantrums, question rules, refuse to follow guidelines or rules and speak harshly, notes Johns Hopkins Medicine. Many of the symptoms develop during childhood and adolescence, but oppositional defiant disorder can also affect adults, especially when other mental health disorders, such as obsessive compulsive disorder are present.
Treatment for oppositional defiant disorder includes individual psychotherapy that relies on cognitive-behavioral approaches to improve communication skills, promote impulse control and cope with anger management, states Johns Hopkins Medicine. Family therapy and peer group therapy can help with developing and improving social skills. Individuals with accompanying mental health disorders may require medication to keep anger under control. Treatment options should be determined by a medical professional in consultation with the patient.