Neuroscientific and trauma informed interventions
In practice, the forms of treatment and intervention varies from individual to individual since there is a wide spectrum of childhood experiences of developmental trauma and symptomatology and not all survivors respond positively, uniformly, to the same treatment. Therefore, treatment is generally tailored to the individual. Recent neuroscientific research has shed some light on the impact that severe childhood abuse and neglect (trauma) has on a childs developing brain, specifically as it relates to the development in brain structures, function and connectivity among children from infancy to adulthood. This understanding of the neurophysiological underpinning of complex trauma phenomena is what currently is referred to in the field of traumatology as trauma informed which has become the rationale which has influenced the development of new treatments specifically targeting those with childhood developmental trauma. Dr. Martin Teicher, a Harvard psychiatrist and researcher, has suggested that the development of specific complex trauma related symptomatology (and in fact the development of many adult onset psychopathologies) may be connected to gender differences and at what stage of childhood development trauma, abuse or neglect occurred. For example, it is well established that the development of dissociative identity disorder among women is often associated with early childhood sexual abuse.
Adults
Trauma recovery model
Judith Lewis Herman, in her book, Trauma and Recovery, proposed a complex trauma recovery model that occurs in three stages: 

Establishing safety
Remembrance and mourning for what was lost
Reconnecting with community and more broadly, societyHerman believes recovery can only occur within a healing relationship and only if the survivor is empowered by that relationship. This healing relationship need not be romantic or sexual in the colloquial sense of "relationship", however, and can also include relationships with friends, co-workers, ones relatives or children, and the therapeutic relationship.Complex trauma means complex reactions and this leads to complex treatments. Hence, treatment for C-PTSD requires a multi-modal approach.It has been suggested that treatment for complex PTSD should differ from treatment for PTSD by focusing on problems that cause more functional impairment than the PTSD symptoms. These problems include emotional dysregulation, dissociation, and interpersonal problems. Six suggested core components of complex trauma treatment include:
Safety
Self-regulation
Self-reflective information processing
Traumatic experiences integration
Relational engagement
Positive affect enhancementThe above components can be conceptualized as a model with three phases. Every case will not be the same, but one can expect the first phase to consist of teaching adequate coping strategies and addressing safety concerns. The next phase would focus on decreasing avoidance of traumatic stimuli and applying coping skills learned in phase one. The care provider may also begin challenging assumptions about the trauma and introducing alternative narratives about the trauma. The final phase would consist of solidifying what has previously been learned and transferring these strategies to future stressful events.