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Psychiatry (Y4) > 1- Mental health conditions (Affective disorders) > Flashcards

1- Mental health conditions (Affective disorders) Flashcards

1
Q

Affective disorders

A
  • Depression
  • Bipolar
  • Persistent mood disorder
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2
Q

Mood

A

Refers to a patient’s sustained, experienced emotional state over a period of time.
- It may be reported subjectively (in the patient’s own words) or objectively as dysthymic (low), euthymic (normal) or elated (elevated).

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3
Q

when does a mood become a mood disorder

A

Fluctuations in mood are a normal part of human experience. It is only when a disturbance of mood is severe enough to cause impairment in the activities of daily living (ADL), that it is considered as a mood disorder.

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4
Q

define mood disorder

A

Mood disorder: Otherwise known as an ‘affective disorder’, is any condition characterized by distorted, excessive or inappropriate moods or emotions for a sustained period of time, which affects normal life functioning

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5
Q

classification of mood disorder

A

Primary
- Unipolar
- Bipolar

Secondary

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6
Q

primary mood disorder

A

a mood disorder that does not result from another medical or psychiatric condition.
- unipolar e.g. depression and dysthmia
- bipolar e.g. bipolar affective disoder, cyclothymia

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7
Q

secondary mood disorder

A

a mood disorder that results from another emdical or psychiatric condition
- physical e.g. hypothyroidism
- pyschiatric e.g. alcoholism
- drug induced e.g. corticosteroids

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8
Q

define depression

A

Definition: an affective disorder characterised by a persistent low mood, loss of pleasure and/ or lack of energy accompanied by emotional, cognitive and biological symptoms

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9
Q

prevalence of depression and epidemiology

A
  • 1 in 20 adults in UK experience depression
  • F>M
  • Onset most common in 40s (F) and 30s (M)
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10
Q

risk factors of depression

A

(FF,AA,PP,SS)
* Female
* Family history
* 50% in monozygotic twins
* Alcohol
* Adverse events
* Past depression
* Physical co-morbidities e.g. thyroid dysfunction
* Low social support
* Low socioeconomic background

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11
Q

causes of depression can be split into

A
  • Predisposing vs precipitating vs perpetuating
  • Biological vs social vs psychological
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12
Q

example biological causes of depression

A
  • Genetic influence
    o e.g. deficiency of monoamines (NA, serotonin and dopamine) cause depression
  • Neuroendocrine e.g. HPA axis
  • Neurological illness e.g. MS
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13
Q

example psychosocial factors causing depression

A

personality type, stressful life events

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14
Q

example social factors causing depression

A

e.g. poor social support, work, housing, finance

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15
Q

Protective factors for depression

A
  • Current employment
  • Good social support
  • Being married
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16
Q

presentation of depression

A

Split into core, cognitive, biological and psychotic

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17
Q

The three typical core symptoms of depression include:

A
  • Low mood (for at least 2 weeks)
  • Anhedonia: low interest or pleasure in most activities of the day
  • Lack of energy (anergia)
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18
Q

Other core symptoms of depression include:

A
  • Weight change: exclusion of intentional dieting
  • Disturbed sleep: insomnia or hypersomnia
  • Psychomotor retardation (slowed down actions) or psychomotor agitation (increased restlessness)
  • Reduced libido
  • Worthlessness or guilt feelings
  • Decreased concentration
  • Recurring thoughts of harm, death or suicide: nihilistic thoughts
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19
Q

Biological (somatic) symptoms of depression

A
  • Loss of emotional reactivity
  • Diurnal mood changes: mood often worse in the morning
  • Sleep changes e.g. early morning wakening: typically 2-3 hours earlier than usual
  • Psychomotor retardation or psychomotor agitation
  • Appetite loss
  • Weight loss
  • Loss of libido
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20
Q

Cognitive symptoms of depression

A
  • Low self esteem
  • Guilt/ blame
  • Hopelessness
  • Hypochondrical thoughts
  • Poor concentration
  • Suicidal thoughts
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21
Q

psychotic features of depression

A
  • Delusions: often revolving around guilt and personal inadequacy
  • Hallucinations: can be auditory, olfactory or visual
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22
Q

depression presentation acronymn

A

Acronym- DEAD SWAMP
- Depressed mood
- Energy loss (anergia)
- Anhedonia
- Death thoughts (suicide)
- Sleep disturbance
- Worthlessness or guilt
- Appetite or weight change
- Mentation (concentration) reduced
- Psychomotor retardation (moving slowly)

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23
Q

differential diagnosis for depression

A
  • Low mood
    o Feeling low from time to time
    o Common after distressing event or major life changes, sometime happen for no obvious reasons
    o Low mood will often pass after a couple of days or weeks
  • Depressive episode linked to substance/ medication use
  • Bipolar affective disorder
  • Premenstrual dysphoric disorder
  • Anxiety disorders
  • Alcohol use disorder
    Organic illness differentials
  • Hypothyroidism
  • Cushing’s
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24
Q

investigations/diagnosis of depression

A

1) Screening tool e.g. PHQ-9
2) Diagnostic criteria e.g. ICD-10
3) Risk assessment
4) Mental state examination
5) Further investigations: bloods and imaging

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25
Q

screening tool for depression

A

PHQ-9
- Can be used to screen for symptoms of a depressive episode

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26
Q

diagnosis of depression uses

A

ICD-10/ criteria

Diagnosis of depressive episode is clinical according to ICD-01-11 diagnostic criteria:
- The presence of symptoms for at least 2 weeks (this may be less if depression is severe)
- The symptoms are not attributable to other organic or substance causes (e.g. normal bereavement)
- The symptoms impair daily function and cause significant distress

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27
Q

risk assessment for depr

A
  • Risk to self self harm, suicide or neglect
  • Risk to other depression with psychotic features
  • Risk from others more vulnerable to abuse, criminal acts or neglect
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28
Q

mental state examination for depression

A
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29
Q

further investigations for depression

A
  • blood tests
  • imaging
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30
Q

blood tests for depression

A
  • Full blood count: anaemia
  • Thyroid function tests: hypothyroidism
  • Vitamin B12: B12 def
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31
Q

imaging for depression

A

Imaging if atypical features e.g. memory loss and personality change
- CT head
- MRI head

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32
Q

management of depression is based

A

Based on the bio-psycho-social model and divided in short term and long term strategies
- Depends on symptoms the patient has
- Depends on level of depression

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33
Q

general management of depression

A
  • Managing comorbidity i.e. alcohol substance abuse, eating disorder etc
  • Managing safeguarding issues
  • Assessing and mitigating suicide risk
  • CBT
  • Counselling
  • Antidepressants
  • Social prescribing i.e. physical activity programmes in groups
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34
Q

Mild depression management

A

Short term
- Antidepressants not routinely offered unless past history of moderate or severe depression or other interventions have failed
- Guided self-help
- CBT
- Counselling
Long term
- Risk assessment
- Ongoing review
- Relapse prevention plan
- Assess social support

35
Q

Moderate or severe depression management

A

Short term
First line: combination of an antidepressant and high-intensity psychosocial intervention

1) Antidepressants
- Selective serotonin reuptake inhibitors (SSRIs) are first line (less toxic in overdose and same effectiveness as tricylic) (Citalopram, Fluoxetine, Sertraline)
- SNRI (serotonin noradrenaline reuptake inhibitors) used as second line (Duloxetine)

2) Psychosocial intervention
- CBT
- Counselling
- Psychotherapy

Long term
- Risk assessment
- Review response to treatment
- Relapse prevention
- Assess social support

36
Q

ECT

A

a treatment which invovles sneding an electric current throught the brain to trigger an epileptic seizure

37
Q

indication for ECT in depression

A
  • severe depressive illness where other treatments have not been effective
  • rapid treatment required e.g. life threatening e.g. food/fluids
  • catatonia
  • high suicide risk
  • ## severe psychomotor retardation
38
Q

severe depression with psychotic symptoms management

A

Antidepressants + antipsychotic (quetiapine or olanzapine)

39
Q

Monitoring depression

A
  • See patients who are not considered to be at increased risk of suicide within 2 weeks of starting treatment and review as reg as appropriate
  • See patients with increased risk of suicide who are younger than 30 within one week of starting treatment and review reg
    If pt high risk of suicide- prescribe a limited quantity of antidepressants
  • Monitor for signs of akathisia, suicidal ideas and increase anxiety and agitation
40
Q

Treatment duration for depression

A
  • For patients who have benefited from SSRI- continue for at least 6 months after remission to reduce risk of relapse
  • When stopping antidepressants reduce dose gradually over a four week period
41
Q

complications of depression

A
  • Suicide
  • Substance misuse and alcohol
  • Recurrent episodes
  • Antidepressant side effects
    o Sexual dysfunction
    o Self harm
    o Weight gain
    o Hyponatraemia
    o Agitation
42
Q

Prognosis of depression

A
  • Average length is 6-8 months
  • Risk of recurrence is 50-%
  • Prognosis worse when psychotic features, anxiety and underlying personality disorder
43
Q

depression history taking

A
44
Q

Postnatal depression

A

Postnatal depression is similar to depression that occurs outside of pregnancy, with the classic triad of:

  • Low mood
  • Anhedonia (lack of pleasure in activities)
  • Low energy

Typically, women are affected around three months after birth.

45
Q

RF for postnatal depression

A

o Personal or family history of depression
o Older age
o Single mother
o Unwanted pregnancy
o Poor social support
o Previous PND

46
Q

prevalence of postnatal depression

A
  • 10-15% of women usually within 1-2 months post partum but can appear later in some women
  • 1 in 4 still depressed a year after delivery
47
Q

Edinburgh Postnatal Depression Scale
.

A

The Edinburgh postnatal depression scale can be used to assess how the mother has felt over the past week, as a screening tool for postnatal depression

48
Q

presentation of postnatal depression

A

Thought content may include worries about the baby’s health or her ability to cope with the baby

49
Q

management of postnatal depression

A

* Mild cases may be managed with additional support, self-help and follow up with their GP
* Moderate cases may be managed with antidepressant medications (e.g. SSRIs) and cognitive behavioural therapy
* Severe cases may need input from specialist psychiatry services, and rarely inpatient care on the mother and baby unit

50
Q

summarise hypomania

A

Usually a part of bipolar disorder
Several of the following features with considerable interference with work/social activity for at least several days
Presentation
- Mildly elevated expansive or irritable mood
- Increased energy
- Increased self esteem
- Sociability, talkativeness, over familiarity
- Increased sex drive
- Reduced need for sleep
- Difficulty in focussing on one task alone

51
Q

summarise mania

A

Again seen with bipolar

  • Elevated/expansive/irritable mood for 1 week
  • Increased energy (inc agitation)
  • Grandiosity
  • Pressure of speech
  • Flight of ideas/racing thoughts
  • Distractible
  • Reduced need for sleep
  • Increased libido
  • Psychotic symptoms
    o Superpowers
    o Religious delusions
  • Lack of judgement
    o E.g. spending
    o E.g. dangerous activities
52
Q

define bipolar

A

A chronic mood disorder characterised by episodes of depression and mania or hypomania. Either one can occur first but the term bipolar also includes those who at the time of diagnosis have suffered only manic episodes, as all cases of mania will eventually develop depression.
- A mixed affective state

53
Q

prevalence of bipolar disorder

A

o 1-3% pre valence
o Bimodal
 15-24 yp
 45-54 yo
o M:F

54
Q

Risk factors for BAD

A
55
Q

causes of bipolar can be split into

A

Biopsychosocial

56
Q

Biological causes of BAD

A

Genetic
- combined effect of many single nucleotide polymorphisms (SNPs)
- Monzygotic 60%
- Polygenic inheritance e.g. polymorphisms in genes which code for monoamine transporters

Neurobiological factors
- Increased dopamine
- HPA axis disturbance causing increased cortisol secretion
- Admin of exogenous corticosteroids can cause mania

Antenatal/ birth
- Prenatal exposire to toxoplasma gondii
- premature birth

57
Q

Environmental causes of BAD

A
  • childhood maltreatment
  • negative life events
  • cannabis use
58
Q

Classification of bipolar affective disorder

A
  • Bipolar I
  • Bipolar II
  • Cylothymia
59
Q

bipolar I

A

bipolar I, the person has experienced at least one episode of mania +/- 1 or >depressive episodes

60
Q

In bipolar II

A

In bipolar II, the person has experienced at least one episode of hypomania, but never an episode of mania. They must have also experienced at least one episode of major depression.

61
Q

Cyclothymia

A

a related disorder characterised by persistent instability of mood
* Involves numerous periods of depression and mild elation, none of which are sufficiently severe or prolonged to justify a diagnosis of BAD

62
Q

Differential diagnoses

A
  • Schizophrenia
    o In bipolar delusions are more grandiose, rather than bizarre
  • Organic brain disorder
    o Frontal lobe pathologies e.g SoL
  • Drug use e.g. steroids
  • Recurrent depression
    o Distinguished by episodes of hypomania
  • Emotionally unstable personality disorder
    o Grandiose ides and marked increase in energy in mania not seen in EUPD
  • Cyclothymia
63
Q

Presentation of bipolar

A

Mania or depression
Severity of mania is divided into
1) Mania
2) Hypomania
3) Mania with psychosis

64
Q

presentation of mania

A
  • Irritability
  • Distractibility
  • Disinhibited/ reckless
    o Sexual
    o Spending
  • Impaired insight
  • Increased libido
  • Grandiose delusion
  • Flight of ideas
  • Energy increase
  • Pressure of speech
  • Sleep decreased
  • Elevated mood
  • Reduced concentration
65
Q

Diagnosis/Investigations of BAD

A

To confirm a diagnosis of bipolar disorder, a referral should be made to a specialist mental health service.

1) History taking- used ICD-10 criteria
2) Mental state exam
3) Neurological examination
4) investigations
- Self rating scale
- Blood tests
- HIV test
- urine test
- CT head

66
Q

bipolar should be considerd when there is evidence of

A
  • Mania: symptoms should have lasted for at least 7 days
  • Hypomania: symptoms should have lasted for at least 4 days
  • Depression (characterised by low mood, loss of interest or pleasure, and low energy) with a history of manic or hypomanic episodes
67
Q

ICD-10 criteria for BAD

A
  • Mania requires 3/9 symptoms to be present.
  • BAD requires at least two episodes in which a persons mood and activity levels have been significant disturbed
  • 5 states of bipolar disorder
    o Currently hypomanic
    o Currently manic
    o Currently depressed
    o Mixed disorder
    o In remission
68
Q

mental state examination for BAD

A
69
Q

Further investigations for BAD

A

1) Self rating scales e.g. mood disorder questionnaire
2) Blood tests
* FBC
* TFTs (hyper/hypothyroidisms
* UE (with view to starting lithium)
* LFTS (review to starting mood stabilisers)
* Glucose and calcium (biochemical disturbance can cause mood symptoms)
3) HIV testing
4) Urine test- illicit drugs
5) CT head
- Rule out SoL- can cause manic symptoms such as disinhibition

70
Q

management summary for BAD

A
  • Full risk assessment is vital including suicidal ideation and risk to self (e.g. financial ruin from overspending). This will determine the urgency of referral to specialist mental health services.
  • Remember to ask about driving. The DVLA has clear guidelines about driving when manic, hypomanic or severely depressed.
  • The Mental Health Act is needed if the patient is violent or a risk to self. Hospitalization will be required if there is: (1) reckless behaviour causing risk to patient or others; (2) significant psychotic symptoms; (3) impaired judgement; (4) or psychomotor agitation.
  • The pharmacological management of bipolar affective disorder is shown in Table 3.3.4. Also see Section 12.4, Mood stabilizers.
  • For bipolar depression, offer a high-intensity psychological intervention (e.g. CBT).
  • ECT is not first-line, but it can be used when antipsychotic drugs are ineffective and the patient is so severely disturbed that further medication or awaiting natural recovery is not feasible.
  • Patients who present with an acute episode should be followed-up once a week initially and then 2–4 weekly for the first few months.
71
Q

The bio-psychosocial approach to BPAD

A
72
Q

Pharmacological management of BPAD: acute manic episode/ mixed episode :

A

First line: antipsychotic rapid onset compared to mood stabilisers
- Olanzapine or risperidone or quetiapine

Second line: Mood stabilisers
- Lithium
- Sodium Valproate if lithium not suitable

Symptoms management
Benzodiazepine for sleep and agitation
- Lorazepam

Rapid tranquilisation
- Haloperidol
- And/Or Lorazepam

73
Q

Pharmacological management of BPAD: bipolar depressive episode

A

First line: Atypical antipsychotics
- Olanzapine (combine dwith fluoxetine), olanzapine alone or quetiapine

Mood stabilise- prophylactic
- Lamotrigine

**
ANTIDEPRESSANTS ALONE ARE USUALLY AVOIDED **

74
Q

why are antidepressant alone avoided in BAD

A
  • They have the potential to induce mania
    • If prescribed should be prescribed with cover of anti-manic e.g. antipsychotic medication
75
Q

Long term management of bipolar affective disorder

A
  • 4 weeks after an acute episode has resolved, lithium should be offered first-line to prevent relapses.
  • If lithium is ineffective consider adding valproate. Olanzapine or quetiapine are alternative options- First line treatment for rapid cycling
76
Q

use of sodium valproate in BAD

A

Sodium valproate should not be used in pregnant women due to its teratogenic effects and is not recommended in women of childbearing age unless the illness is very severe and there is no effective alternative. In this circumstance, the patient should have a pregnancy prevention plan.

77
Q

first line trreatment for manic episode of bipolar

A

olanzapine or risperidone or quietapine

78
Q

which drug minimises bipolar relpase

A

lithium

79
Q

lithium toxicity

A

narrow therapeutic window so drug levels need to be monitored regularly
- 12h following first dose
- Weekly until therapeutic level (0.5-1.0mmol/l) has been stable for 4 weeks
- Once stable check every 3 months
o U+Es every 6 months
o TFTs every 12 months

80
Q

tests prior to starting lithium

A

o UEs
o TFTS
o Pregnancy status
o Baseline ECG

81
Q

specific complications of lithium

A
  • hypothyroidism- reversible
  • renal damage- irreversible
82
Q

side effects of lithium

A

o Polydipsia
o Polyuria
o Fine tremor
o Weight gain
o Oedema
o Hypothyroidism
o Impaired renal function
o Memory problem
o Teratogenicity

83
Q

signs of toxicity due to lithium

A
  • Signs of toxicity (1.5-2.0 mmol/l)
    o N+V
    o Tremor
    o Ataxia
    o Muscle weakness
    o Apathy
  • Signs of severe toxicity (>2.0 mmol/l)
    o Nystagmus
    o Dysarthria
    o Hyperreflexia
    o Oliguria
    o Hypotension
    o Convulsions
    o Coma
84
Q

Dysthymia

A

Chronic low mood not fulfilling the criteria of depression

Psychiatry (Y4) (15 decks)

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