Petrus Psychology Professional Corporation provides children, teens, young adults, and families with the most up-to-date mental health treatment for oppositional defiant disorder, Asperger?s disorder/pervasive developmental disorders/autistic spectrum disorders, depression, anxiety, obsessive compulsive disorder, attention deficit hyperactivity disorder (ADHD), conduct disorder, bipolar disorder, high risk behaviors, self-harm, substance abuse, co-occurring disorders, and family conflict.