Discuss diagnosing childhood PTSD and doing a differential diagnosis (include acute stress disorder, reactive attachment disorder, disinhibited social engagement disorder, depression, OCD, oppositional defiant disorder, adjustment disorder and bipolar disorder). List the central features of each and how to differentiate it from PTSD. How does acute verses chronic trauma play a role and what is a “dose-response effect”? What are the best methods for diagnosing appropriately?