Obsessive Compulsive Disorder Flashcards Preview

Cognitive And affective neuroscience > Obsessive Compulsive Disorder > Flashcards

Flashcards in Obsessive Compulsive Disorder Deck (31)
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1
Q

What are the symptoms of OCD?

A
> Obsessional thoughts
> Obsessional imagery 
> Doubting 
> Obsessional impulses
> Contamination
> Phobias
2
Q

What are compulsions?

A

An almost irresistible need to perform certain acts or thoughts in an effort to reduce anxiety

3
Q

What are some common examples of compulsions?

A

> Checking rituals
Cleaning rituals
Obsessional slowness
~55% of normal population acknowledges compulsive behaviours

4
Q

What is the OCD cycle?

A
> Obsessions
> Anxiety
> Compulsions
> Relief
> Repeat
5
Q

During assessment of OCD what must clinicians be aware of?

A

> Conceal symptoms
Comorbid with Tourette’s
Children may develop OCD after streptococcal infection
Pregnant women may develop or increase symptoms

6
Q

What information is used when making an OCD assessment?

A
> General medical history
> Yale-Brown obsessive-compulsive scale
> Patient's own thoughts/theories
> Family history
> Brain imaging
7
Q

What are the different proposed aetiologies for OCD?

A

> Psychological disorder
Social disorder
Biological disorder

8
Q

What are the different dimensions of OCD onset?

A

> Biological dimension
Psychological dimension
Social dimension
Sociocultural dimension

9
Q

What are the features of the biological dimension of OCD onset?

A

> Dysregulation of orbital frontal caudate circuit
Lower activation of cingulate cortex
Subgroups differ on genetic and biological involvement

10
Q

What are the features of the psychological dimension of OCD onset?

A

> Lack of trust in own performance
Impulse control conflicts
Anxiety reduction
Immoral thoughts equivalent to behaviour

11
Q

What are the features of the social dimension of OCD onset?

A

Social vulnerabilities (divorce, separation, unemployment)

12
Q

What are the features of the sociocultural dimension of OCD onset?

A

> No gender differences
Childhood onset more common in males
Children do not usually request help

13
Q

What are the psychological theories of OCD?

A

> Psychodynamic theory

> Personality (axis I v axis II)

14
Q

What does the psychodynamic theory of OCD propose?

A

That OCD is a regression to anal phase

15
Q

What does the personality theory of OCD propose?

A

> OCD likelihood is dependant on personality type

> ~ 25% with OCD have OCPD

16
Q

What does the behavioural theory of OCD propose?

A

> Classical conditioning (innocuous stimulus to stress responses)
Operant conditioning (Compulsions develop through anxiety reduction)

17
Q

What did Beck’s Schemata propose?

A

> Indiv diff in operation of schemata underlies vulnerability to mood disorders
Emotional material requires more processing (biased attention)

18
Q

What are the types of core belief present in depression?

A

> Helpless core beliefs
Unlovable core beliefs
Worthless core beliefs

19
Q

What are the types of core beliefs present in anxiety?

A

> Self core beliefs
Others core beliefs
Future core beliefs

20
Q

What is Beck’s Cognitive Specificity Hypothesis?

A

The main cognitive explanation for OCD

21
Q

What are the features of Beck’s Cognitive Specificity Hypothesis?

A

> Depression (views and core believes)

> Anxiety (overestimation of threats, lack of control)

22
Q

What are the cognitive biases underlying OCD?

A

> Amnesiac deficit hypothesis
Overestimation of threat / Inflated responsibility
Beliefs about the importance of, and need to control, intrusive thoughts

23
Q

What are the biological explanations for OCD?

A

> Serotonin and Dopamine Hypotheses
Neuroimmunology
Genetics
Structural abnormalities

24
Q

What does the neuropathological framework of OCD propose?

A

OCD is a result of abnormalities in:
> Serotonin systems (hypofunction in basal ganglia)
> Dopamine systems (hyperfunction in prefrontal cortex)
> Glutamate systems

25
Q

What evidence is there of a genetic component to OCD?

A

> Bolton et al (2007)
Comorbidity with tic and anxiety disorders
29-47% heritability
No gender differences
Complex pattern of inheritance
Neurotransmitter gene systems
Environmental factors also transmit within families

26
Q

What differences have been observed between OCD populations and ‘healthy’ controls?

A
> Problems in pathways between frontal lobe and deep brain structures
>OCD have increased activity in:
   -> Orbitofrontal cortex
   -> Cingulate cortex
   -> Caudate nucleus
   -> Thalamus
27
Q

What did Bannich and Compton demonstrate?

A

In OCD prefrontal ganglia loops are overactive

28
Q

What are the treatments for OCD?

A

> Behaviour therapy
CBT
Medication (SSRIs)
Surgery

29
Q

What are the different types of behaviour treatment for OCD?

A

> Exposure

> Flooding

30
Q

What are the limitations of the biological treatments of OCD?

A

> Side effects

> High rate of relapse

31
Q

What are the different types of neurosurgery used to treat OCD?

A

> Capsulotomy
Cingulatomy
Deep brain stimulation