Distinguishing Bipolar Symptoms from ADHD in Children - "Eighty percent of children with Bipolar illness also have ADHD. The ADHD that they have is going to be very severe. But they also have mood dysregulation, irritability, and sometimes violent behaviors."
Bipolar disorder and ADHD can make it difficult to get things done and have meaningful relationships. And yet the two mental illnesses are very different from one another. See the key differences in this simple infographic.