A Pilot Research Project on Outcome of Trauma Informed Stabilization Treatment (TIST) for Adults with Complex Trauma Symptoms After Childhood Trauma, At the Department of Trauma Treatment, Modum Bad, Norway

Inclusion Criteria: * Adults ≥18 years * Complex symptom presentations connected to childhood trauma * All patients will have undergone outpatient therapy with insufficient effect * Most included patients will have a diagnosis of complex PTSD (diagnosed by M.I.N.I. and clinical evaluation) * Patients may have diagnosis of unspecified dissociative disorder, personality disorders, depression and other comorbidity. Exclusion criteria: * Dissociative identitiy disorder * Ongoing psychosis * Ongoing drug addiction * Very disturbed group function * Ongoing life crisis * Mental disability * Acute suicidality * Ongoing severe self harm * Patients with complex dissociative disorders and patients eligible for exposure therapy will be referred to/prioritized for other treatment programmes.