Dissociative Identity Disorder

Question 1

What is the prevalence of DID?

Answer 1

1.5%

Question 2

How is DID characterised?

Answer 2

Two or more distinct identity states
Memory gaps behind ordinary forgetfulness
Fluctuating states of consciousness
Changing access to autobiographical memory

Question 3

What are the two types of identity states in DID?

Answer 3

Trauma related identity state
Neutral identity state

Question 4

How is the Trauma related identity state characterised?

Answer 4

Emotional
Fixed in past trauma
Retracted field of consciousness
Disorienting in place time and identity
Often child like behaviour/subjective sense of age

Question 5

Neutral identity state characterised?

Answer 5

Apparently normal
Detached from trauma
No to little access to traumatic memories
Higher level of consciousness than trauma identity state, but lower than normal

Question 6

What do pharmacological treatments for DID work on?

Answer 6

Co morbid symptoms
Depression
Anxiety
Sleep disturbance

Question 7

What is the most commonly used intervention for DID?

Answer 7

Psychotherapeutic:
Phase oriented treatment of therapy

Question 8

What percentage of people with PTAD have the dissociative type?

Answer 8

12-30%

Question 9

What brain activity is seen in PTSD hyperarousal?

Answer 9

Decreased rostrum ACC activity
Decreased mPFC activity
Increased amygdala activity
Increased right anterior insula activity

Undermodulation of emotion = reexperiencing

Question 10

What brain activity is seen in PTSD dissociative?

Answer 10

Increased rostral ACC activity (regulation)
Increased medial PFC (regulation)
Decreased amygdala activity (fear/emotion)
Decreased right anterior insula (awareness of bodily state)

Over modulation of emotion = dissociation