Affective Disorders Flashcards
Remind yourself of the definition of:
- Mood
- Affect
- Mood is a pt’s sustained, experienced emotional state over a period of time (can be sujective or objective)
- Affect is the pt’s immediate expression of emotion/transient flow of emotion in response to a particular stimulus (what you observe)
*Can think of mood as the season and weather being the affect
Fluctuations in mood are normal; it only becomes a mood/affective disorder when….?
… the mood disturbance is severe enough to impair the activities of daily living
In the ICD-10 classification there are 7 categories of affective disorders; state these
- Manic episode (includes hypomania, mania with psychotic symptoms & mania without pschotic symptoms)
- Bipolar affective disorder
- Depressive episode
- Recurrent depressive episode
- Persistent mood disorders (e.g. cyclothymia, dysthymia)
- Other mood disorders (e.g. mixed affective disorder= symptoms of both mania and depression at same time)
- Unspecified mood disorders
Aswell as the ICD classification, mood disorders can be classified as primary or secondary; explain the difference between primary and secondary mood disorders and discuss any further classification
*aim to be able to explain/draw out classification of mood disorders diagram from book
-
Primary: does not result from another medical condition.
- Can be further classified as unipolar (depressive disorder, dysthymia) or bipolar (bipolar affective disorder, cyclothymia).
- Depressive disorders can be classified as mild, moderate, severe and psychotic
- Bipolar affective disorder can be classified as bipolar 1 or 2
- Secondary: results from another medical or psychiatric condition or is drug induced

Define depressive disorder
Affective mood disorder characterised by persistent low mood, loss of pleasure and/or lack of energy accompanied by emotional, cognitive and biological symptoms.
Depressive disorder is not genetic; true or false?
False:
- Monozygotic twin studies show that if 1 twin has depression there is 40-50% chance other twin will have depression hence likley mutliple genes involved
HOWEVER, it is multifactorial influenced by many biopsychosocial factors (it is not just genetic)
What is the monoamine hypothesis?
Deficieny of monamines (serotonin, noradrenaline & dopamine) causes depression
What is the evidence supports the monamine hypothesis?
- Antidepressants improve depression and these increase the concentration of the monoamine neurotransmitters in synaptic cleft
- 5HIAA a metabolite of serotonin low in CSF of pts wtih depresion
- Tryptophan is a precursor for serotonin and it’s depletion causes depresion
Discuss the prevelance and epidemiology of depressive disorders, include:
- How many people worldwide affected
- Whether it causes disability
- Which gender more common in
- Age of onset
- >300 million people worldwide
- Leading cause of disability
- Females > men
- Age of onset:
- Female: 30’s
- Males: 40’s
State some predisposing factors for depressive disorder, include:
- Biological
- Psychological
- Social

State some precipitating factors for depressive disorder, include:
- Biological
- Psychological
- Social

State some perpetuating factors for depressive disorder, include:
- Biological
- Psychological
- Social

Alongside thinking of the biopsychosocial model to think of predisposing, precipitating and perpetuating factors for depressive disorder you can also use the mneumonic FF, AA, PP, SS to quickly think of some risk factors
- Female
- Family history
- Adverse event
- Alcohol
- Past depression
- Physical co-morbidities
- Social support (little)
- Socioeconomic status (low)
Clinical features of depression can be grouped into 3 categories; state the categories and give examples of each
*You must include all 3 core symptoms
Core symptoms
- Low mood (at least 2 weeks)
- Lack of energy/anergia
- Lack of interest and pleasure in things that were previously enjoyable/anhedonia
Cognitive symptoms
- Lack of concentration
- Excessive guilt (excessive or inappropriate guilt nearly every day)
- Suicidal ideation
- Hypochondrial thoughts (think that you are getting ill or are ill)
- Hopelessness
- Negative thoughts (Beck’s triad)
Biological symptoms
- Sleep changes- usually EMW 2 hours before usual time (may have hypersomnia)
- Loss of libido
- Appetite or weight changes (usually loss)
- Diurnal variation in mood (DVM)
- Psychomotor retardation
DEAD SWAMP is a helpful mneumonic to help you remember common symptoms of depressive disorder; state the mneumonic
- Depressed mood
- Energy decreased
- Anhedonia
- Death thoughts (suicide)
- Sleep disturbances
- Worthlessness or guilt
- Appetite and/or weight change
- Mentation (concentration) reduced
- Psychomotor retardation
What is Beck’s cognitive triad?

Examples of how to ask questions in depressive disorder

Pts with depressive disorder may have psychotic symptoms; state two common psychotic symptoms in depression
- Delusions: usually hypochondriacal, guilt, nilhilistic or persecutory in nature
- Hallucinations: usually second person auditory
What does nihilistic mean?
What is a nilhilistic delusion?
Rejecting all religious and moral principles in the belief that life is meaningless.
Belief that they are worthless or dying. In severe cases they claim that everything is non-existent including themselves (Cotard’s syndrome)
According to the ICD-10 classification, how many symptoms do pts need to have in order to be diagnosed with:
- Mild depression
- Moderate depression
- Severe depression
- Severe depression with psychosis
- Mild depression: 2 core + 2 other
- Moderate depression: 2 core + 3-4 others
- Severe depression: 3 core + >/=4 others
- Severe depression with psychosis: 3 core + >/= 4 others + psychosis
Episode must have lasted at least 2 weeks.
Depressive disorder it can occur with our without somatic syndrome. Discuss:
- What somatic syndrome is
- Criteria for somatic syndrome in mild & moderate depression
- Whether somatic syndrome is present in severe depression
Somatic syndrome involves a person having a significant focus on physical symptoms/pt is highly affected by the somatic symptoms of depression. Criteria is as follows:
- Mild & moderate without somatic syndrome: few if any somatic symptoms
- Mild & moderate with somatic syndrome: four or more of somatic symptoms are present (if have two or three but are severe then may be able to put in this category)
- Severe: presumed that somatic syndrome will almost always be present
Discuss what investigations you may consider in depression
*Hint: remember your three categories: bedside, bloods, imaging
Investigations are usually done to exclude organic causes of depression- they are not mandatory.
Bedside:
- Diagnostic questionnaires (e.g. PHQ-9, Beck’s depression inventory)
- Plasma glucose (diabetes causing anergia)
Bloods:
- FBC (anaemia causing anergia)
- TFTs (hypothyroidism)
- U&E’s, LFTs, calcium (biochemical abnormalities can cause somatic symptoms that mimic depressive symptoms)
- HbA1c (diabetes)
Imaging:
- CT or MRI head (if suspicous of intracranial pathology e.g. they have unexplained headaches or marked personality changes)
Discuss what you may find on MSE of a pt with depressive disorder
*remember, ASEPTIC

State some differential diagnoses for depressive disorder
- Other mood disorders e.g. bipolar affective disorder, cyclothymia, seasonal affective disorder, dysthymia, baby blues, post-natal depression
- Secondary to physical condition e.g. hypothyroidism
- Secondary to other psychiatric disorders e.g. psychotic disorders, anxiety disorders, personality disorder, eating disorder
- Secondary to psychoactive substance abuse
- Normal bereavement









