Once you find a trusted, knowledgeable therapist who has just the right mix of humor, empathy, and helpful tools he might also ask you to take your child to see a psychiatrist for an evaluation. A psychiatrist is simply a medical doctor who has special training in the field of psychiatric medicine. She can provide a diagnostic evaluation, consider physical factors that might suggest a physical diagnosis, or prescribe medications. Be sure to ask whether she specializes in treating children. This may seem like a common-sense question but you would be surprised how many people do not ask it.