Deep brain stimulation is increasingly being used for people suffering from Obsessive Compulsive Disorder or OCD, which affects about three percent of the population. Dr. Moksha Patel, who's a physician at the University of Colorado Anschutz Medical Campus, suffered from debilitating symptoms of OCD, including obsessive hand-washing, showering, even using cleaning agents like bleach to clean his body. He said the symptoms made him feel like a prisoner of his own mind and kept him from many day-to-day activities.