Loses time — hours or occasionally full days with no memory. Colleagues report personality shifts: sometimes competent and authoritative, other times childlike and confused, occasionally cold and hostile. Found clothing she doesn't remember buying. Hears internal voices arguing. Diagnosed DID after two years of misdiagnosis (bipolar, then BPD). Says: 'I don't know who I is. I know that's not grammatical. But that's what it feels like.'
History
Ritual abuse in a cult from ages 3-11 before removed by CPS. Multiple foster placements. Completed MSW, functions well professionally most of the time. Married to a patient, understanding partner. Currently stable but terrified of losing her job if the switching becomes visible.
Clinical note: Lena's DID has less RCT evidence behind it than most conditions in this tool — the disorder is rare (~1-1.5% prevalence; Loewenstein, 2018), heterogeneous, and ethically difficult to study with standard designs. Her professional functioning as a social worker is a significant prognostic strength — she has a high-functioning ANP and the ego resources to sustain demanding therapeutic work. The Treatment of Patients with Dissociative Disorders study (Brand et al., 2012) showed significant improvement in dissociation, PTSD, depression, and general distress over 30 months of phase-oriented treatment. The ISSTD Treatment Guidelines (2011) recommend this three-phase framework (stabilization, trauma processing, integration) regardless of modality. The central question for Lena is whether to aim for full integration (fusion of parts into one identity) or functional multiplicity (parts working cooperatively without fusion) — the research supports both as legitimate endpoints, and her preference should guide the goal. The ritual abuse history means Phase 2 work must be extremely carefully titrated; premature trauma processing can destabilize the entire system (Brand & Loewenstein, 2014). The field remains dogged by the DID debate — sociocognitive model (iatrogenic/cultural artifact) versus post-traumatic model (developmental adaptation to overwhelming childhood experience). The research consensus supports the post-traumatic model (Dalenberg et al., 2012; Brand et al., 2016).
Where Approaches Genuinely Disagree
Parts or symptoms?
IFS
The parts are real aspects of the person's system with histories and intentions. Work with them as people.
vs.
CBT
Dissociation is a learned avoidance response. Grounding and cognitive restructuring help the person stay present.