Symptoms of inattention in adults with attention deficit hyperactivity disorder include:

• Avoids tasks that require mental effort
• Difficulty concentrating during tasks or activities
• Difficulty organizing tasks
• Does not follow through on instructions
• Easily distracted
• Fails to finish tasks
• Makes careless mistakes
• Often forgetful
• Often loses things

Symptoms of hyperactivity include:

• Difficulty being quiet
• Fidgeting with hands

Symptoms of impulsive behavior include:

• Gives answers before questions are completed
• Difficulty waiting in lines