Affective Disorders Flashcards
What are the ICD-10 core symptoms of depression?
Depressed mood
Loss of Interest
Lack of energy
What are the DSM-IV core symptoms of depression?
Depressed mood
Loss of interest
Cognitive symptoms of depression?
Poor concentration/indecisiveness
Inappropriate guilt
Worthlessness
Hopelessness
Loss of self esteem/confidence
Suicidal thoughts
Suicidal plans
Suicide attempt
Diurnal variation of mood
Hypochondriacal thoughts
Biological symptoms of depression?
Weight disturbance (loss or gain)
Appetite disturbance (Decrease or increase)
Sleep disturbance (decrease or increase)
Psychomotor agitation or retardation
Fatigue or loss of energy
What should be excluded when considering a diagnosis of depression?
Mixed states
Substance or General Medical Condition
(GMC) induced
Bereavement
Typical symptoms of depression?
Low mood
Anhedonia, a lack of pleasure in activities
Low energy
Anxiety and worry
Clinginess
Irritability
Avoiding social situations (e.g. school)
Hopelessness about the future
Poor sleep, particularly early morning waking
Poor appetite or over eating
Poor concentration
Physical symptoms such as abdominal pain
ICD-10 criteria for depression
2/3 of:
Depressed mood*
Loss of interest*
Reduction in energy*
And at least 2 of:
Loss of confidence or self-esteem
Unreasonable feelings of self- reproach or inappropriate guilt
Recurrent thoughts of death or suicide
Diminished ability to think/ concentrate or indecisiveness
Change in psychomotor activity with agitation or retardation
Sleep disturbance
Change in appetite with weight change
For at least 2 weeks (or shorter if unusually severe and of rapid onset)
What is the DSM–IV major/minor depressive disorder diagnostic criteria?
One of:
- Depressed mood most of the day, nearly every day
- Markedly diminished interest or pleasure in all, or almost all, activities most of the day, nearly every day
And then 2-3 or more of (total of 5 symptoms):
- Significant weight loss or weight gain when not dieting or decrease or increase in appetite nearly every day
- Insomnia or hypersomnia nearly every day
- Psychomotor agitation or retardation nearly every day
- Fatigue or loss of energy nearly every day
- Feelings of worthlessness or excessive or inappropriate guilt nearly every day
- Diminished ability to think or concentrate, or indecisiveness nearly every day
- Recurrent thoughts of death, recurrent suicidal ideation without a specific plan, or a suicide attempt or a specific plan for committing suicide
Present for 2 weeks or more
Reasons why women might have a higher rate of depression?
Hormonal changes in women, particularly during puberty, prior to menstruation, following pregnancy and at perimenopause, suggests that female hormonal fluctuations
Prevalence of sexism in society
Women also experience specific forms of depression-related illness, including premenstrual dysphoric disorder, postpartum depression and postmenopausal depression and anxiety
What questions can screen for depression?
The following two questions can be used to screen for depression:
‘During the last month, have you often been bothered by feeling down, depressed or hopeless?’
‘During the last month, have you often been bothered by having little interest or pleasure in doing things?’
A ‘yes’ answer to either of the above should prompt a more in depth assessment.
What tools exist to assess the degree of depression?
Hospital Anxiety and Depression (HAD) scale and the Patient Health Questionnaire (PHQ-9)
Hospital anxiety and depression scale
consists of 14 questions, 7 for anxiety and 7 for depression
each item is scored from 0-3
produces a score out of 21 for both anxiety and depression
severity: 0-7 normal, 8-10 borderline, 11+ case
patients should be encouraged to answer the questions quickly
Patient health questionnaire (PHQ-9)
asks patients ‘over the last 2 weeks, how often have you been bothered by any of the following problems?’
9 items which can then be scored 0-3
includes items asking about thoughts of self-harm
depression severity: 0-4 none, 5-9 mild, 10-14 moderate, 15-19 moderately severe, 20-27 severe
Which criteria do NICE suggest to diagnose depression?
DSM-IV
5 of, including 1 and/or 2
1. Depressed mood most of the day, nearly every day*
2. Markedly diminished interest or pleasure in all, or almost all, activities most of the day, nearly every day*
What is quantified (by DSM-IV) as mild depression?
Few, if any, symptoms in excess of the 5 required to make the diagnosis, and symptoms result in only minor functional impairment
What is quantified (by DSM-IV) as moderate depression?
Symptoms or functional impairment are between ‘mild’ and ‘severe’
What is quantified (by DSM-IV) as severe depression?
Most symptoms, and the symptoms markedly interfere with functioning. Can occur with or without psychotic symptoms
How does NICE simplify the classification of depression?
‘less severe’ depression: encompasses what was previously termed subthreshold and mild depression
a PHQ-9 score of < 16
‘more severe’ depression: encompasses what was previously termed moderate and severe depression
a PHQ-9 score of ≥ 16
Treatment options for less severe depression in order of preference as per NICE
guided self-help
group cognitive behavioural therapy (CBT)
group behavioural activation (BA)
individual CBT
individual BA
group exercise
group mindfulness and meditation
interpersonal psychotherapy (IPT)
selective serotonin reuptake inhibitors (SSRIs)
counselling
short-term psychodynamic psychotherapy (STPP)
What does NICE say about managing less severe depression?
NICE lists a large number of interventions that may be used first-line. It encourages us to discuss treatment options with patients to reach a shared decision.
They recommend considering ‘the least intrusive and least resource intensive treatment first’.
It also recommends not routinely offering ‘antidepressant medication as first-line treatment for less severe depression, unless that is the person’s preference’.
Treatment options for mild depression in order of preference as per NICE
a combination of individual cognitive behavioural therapy (CBT) and an antidepressant
individual CBT
individual behavioural activation (BA)
antidepressant medication
selective serotonin reuptake inhibitor (SSRI), or
serotonin-norepinephrine reuptake inhibitor (SNRI), or
another antidepressant if indicated based on previous clinical and treatment history
individual problem-solving
counselling
short-term psychodynamic psychotherapy (STPP)
interpersonal psychotherapy (IPT)
guided self-help
group exercise
Factors suggesting a diagnosis of depression over dementia?
short history, rapid onset
biological symptoms e.g. weight loss, sleep disturbance
patient worried about poor memory
reluctant to take tests, disappointed with results
mini-mental test score: variable
global memory loss (dementia characteristically causes recent memory loss)
Psychiatric differentials for depression
Bipolar disorders
Schizophrenia
Dementia
Seasonal affective disorder
Bereavement
Anxiety
Biological factors which may increase the risk of depression?
Age - teenage years to early 40s
Female sex
Genetics: family history of depression in the nuclear family increases the risk to almost 30-40% and up to 50% in monozygotic twins
Personality: dependent, anxious, impulsivity and obsessional traits
Physical illness: neurological illnesses such as Parkinson’s disease and multiple sclerosis, hypothyroidism or chronic illnesses
Biochemical theories/monoamine deficiency: serotonin imbalance causes depressive symptoms
Neuroendocrine: hypothalamic-pituitary-adrenal axis
Co-morbid substance misuse
Medications: beta-blockers, steroids
History of other mental illnesses: anxiety
Psychological factors which may increase the risk of depression?
Traumatic life events/childhood experiences: adverse experiences including loss of a loved one, lack of parental care and childhood sexual abuse
Environmental factors (e.g. support)
Low self-esteem and negative automated thoughts (e.g. helplessness, hopelessness, worthlessness)
Lack of education
Social factors that increase the risk of depression
Poor social support
Poor economic status or support
Marital status: separated or divorced
Tests to rule out organic differentials of depression
Thyroid function
Full blood count
B12
Metabolic panel
Neuro imaging
When do NICE reccomend ECT for depression?
Severe depressive episodes that are life threatening or require rapid response
Risk assessment in depression?
Risk to self: self-harm, suicide or neglect (commonest in depression)
Risk to others: when depression presents with psychotic features, such as command hallucinations, they may be at risk of harming others
Risk from others: patients with depressive symptoms may be more vulnerable to abuse, criminal acts or neglect
When might medication be offered in mild depression?
Past history of moderate or severe depression
Presence of mild depression that has been present for at least 2 years
Presence of mild depressive symptoms after other interventions
Patient preference
Long term management of moderate-severe depression
Risk assessment
Review their response to high-intensity psychosocial intervention compliance and symptoms
Review their response to antidepressant therapy, compliance, side effects and adjust doses if appropriate
Measurement scales to assess response to treatment and quality of life
Relapse prevention plan
Assess social support and previous issues flagged up during the consultation
Complications of depression
Suicide: the risk of suicide in patients with depression is four times higher than in patients without depression
Substance misuse and alcohol use problems: patients are at increased risk of becoming dependent on substances
Persistent symptoms: 10-20% of patients will have persistent symptoms over 2 years
Recurrence of depressive episodes: most patients have a recurrence in later life
Reduced quality of life: patients may struggle with employment and relationships
Antidepressant side effects: may include sexual dysfunction, risk of self-harm, weight gain, hyponatraemia and agitation
What is bipolar disorder
Mood/affective disorder characterised by episodes o depression and mania or hypomania
Incidence of bipolar
Bimodal distribution peaking around age of onset at 15-24 years and 45-54yeata
Roughly equal distribution of prevalence between men and women
Aetiology of bipolar disorders
Invokes genetic environmental and neurobiological components
Heritable within families but genetics not only determine factor
Bipolar disorder - genetic causes
First-degree relatives of a person affected with bipolar disorder are at increased risk of developing bipolar and unipolar mood disorders and schizoaffective disorder
The genetic risk associated with bipolar disorder is a type of polygenic inheritance (the sum effect of many low-penetrance mutations). Some polymorphisms in genes that code for monoamine transporters and brain-derived neurotrophic factor (BDNF) are associated
Evidence suggests there is an overlap in the genetic risk between bipolar disorder and schizophrenia.3 Genetic contributions may also be associated with copy number variants and gene-gene interactions