A common symptoms of a behavior disorder is

Some common symptoms of behavior disorders in children and adolescents may include:

- Frequent aggression or hostility toward others
- Persistent disobedience and opposition to authority figures
- Lack of empathy and concern for others
- Difficulty with impulse control and emotions
- Defiance and disregard for rules and social norms
- Difficulty maintaining relationships with peers and adults
- Self-harm or suicidal tendencies
- Hyperactivity and distractibility

It's important to note that every child is different and may display symptoms in their own unique way. It's also essential that a professional assessment is conducted to diagnose a behavior disorder as there can be other factors influencing the behaviors.