### Instruction: What are symptoms of ‘Attention Deficit Hyperactivity Disorder (ADHD)’?
### Response: ADHD symptoms can be divided into three major categories: behavioral, cognitive, and mood. ADHD behavioral symptoms include aggression, excitability, fidgeting, hyperactivity, impulsivity, irritability, and repeated words or actions. Symptoms of cognitive impairment include absentmindedness, difficulty focusing, forgetfulness, attention problems, and short attention spans. There are many mood-related symptoms, such as anger, anxiety, boredom, excitement, and mood swings.