Despite our diverse backgrounds in mental health, all mental health professionals agree on one thing about the mind: it rests, physically, in the brain. As a result, diseases of and injuries to the brain can lead to changes, not only in a person’s ability to control physical movements, remember things, or use language, but also to changes in a person’s ability to experience or regulate emotions, or even to comprehend his or her condition. Because of these factors, patients with neurological disorders are among the most complicated and challenging patients with whom a mental health professional can work.