Oppositional defiant disorder (ODD) is described by the Diagnostic and Statistical Manual of Mental Disorders (DSM) as an ongoing pattern of disobedient, hostile and defiant behavior toward authority figures which goes beyond the bounds of normal childhood behavior. People who have it may appear very stubborn.

Common features of Oppositional Defiant Disorder (ODD) include excessive, often persistent anger, frequent temper tantrums or angry outbursts, and disregard for authority. Children and adolescents with this disorder often annoy others on purpose, blame others for their mistakes, and are easily annoyed. In addition, these young people may appear resentful of others and when someone does something they don’t like they often take revenge on them. In order for a child or adolescent to qualify for a diagnosis of ODD these behaviors must cause considerable distress for the family and/or interfere significantly with academic or social functioning. Interference might take the form of preventing the child or adolescent from learning school material, making friends, or placing them in harmful situations. These behaviors must also persist for at least six months.

(via procrastenabled)