The main field of Child Psychiatry is the evaluation, diagnosis and treatment of behavior, thought, emotion and related developmental problems in children.
Problems frequently seen in children and adolescents are attention deficit and hyperactivity disorder, child and adolescent depression, anxiety disorders and learning disorders. 
Conditions diagnosed and treated by a child and adolescent psychiatrist are as follows:

Attention Deficit Hyperactivity Disorder ADHD
Anxiety and Anxiety Disorder
Learning Disabilities and Dyslexia
Obsessions and Obsessions OCD
Depression and Mood Disorders
In addition to these, mental disabilities, autism and asperger's syndrome are also conditions that are diagnosed and treated by a child psychiatry medical doctor.
Support is provided to families who consult with child psychologists on issues such as sleep disorders, tics and obsessions, and eating disorders. 
Problems within friends and family, adjustment disorders, sexual development and sexual problems and puberty problems,
child and adolescent psychiatry is the medical doctor's specialty.