It's important that children with these conditions receive help before the behaviors lead to more serious problems. About one-fourth feel anxious. They feel tremendous worry, tension, or uneasiness, even when there's nothing to fear. Because the feelings are scarier, stronger, and more frequent than normal fears, they can affect the child's thinking and behavior. Others experience depression.
Depression can disrupt sleep, appetite, and the ability to think.
Because emotional disorders and attention disorders so often go hand in hand, every child who has ADHD should be checked for accompanying anxiety and depression. Of course, not all children with ADHD have an additional disorder. But when they do occur together, the combination of problems can seriously complicate a person's life. NIH Publication No.