Bipolar disorder Flashcards
Categories within DSM-V bipolar spectrum
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Bipolar I
- Mania: psychotic + non-psychotic
- Mixed state
- Major depression
-
Bipolar II
- Hypomania + Major depression
-
Bipolar NOS
- Hypomania w/o major depression, subsyndromal hypomania w/ major depression, rapid cycling
-
Cyclothymia
- Subsyndromal mania/depression
Prevalence of bipolar disorder
- 8% Bipolar I
- 5% Bipolar II
(Approx 1.5% overall, higher if bipolar NOS included up to 4%)
Risk to first degree relatives of pts with BPD
First degree relatives of BPD
- 10% bipolar (4-24%)
- 15% depression
Precipitating factors for BPD
- Bio: Shift work, stop/start of meds, street drugs
- Psycho: Loss/gain events
DSM-5 definition of mania
Abnormally and persistently elevated, expansive, or irritable mood (often irritable rather than elevated)
lasting at least 1 week
accompanied by persistently increased energy or activity levels
DSM-5 criteria for manic episode
Mania (as per definition)
Marked impairment in functioning
3 or more symptoms of mania
Symptoms of mania/hypomania (DSM-5)
- Euphoria/irritability
- Excessive self-esteem, grandiosity
- Reduced need (not necessarily quantity) for sleep
- Increase in goal-directed activity
- Flight of ideas
- Distractibility
- Increased talkativeness, pressure of speech
- Overfamiliarity
- Disinhibition/poor judgement –> increased involvement to out-of-character activities that might have painful consequences
Implications of psychotic symptoms in BPD
Bipolar I by definition (i.e. not hypomania)
Marker of severity
May indicate schizoaffective disorder
DSM-5 definition of hypomania
Abnormally + persistently elevated/irritable mood
At least 4 days
Noticed by others + clearly different from nondepressed mood
Not causing marked impairment in f(x) (or would be mania)
Insight may be preserved (cf mania)
Clinical features of mixed states
Depressive and manic symptoms coexist within one day (all the energy + all the negativity)
M:F ratio of bipolar
1:1
Mean age of onset of BPD
Early 20s
Heritability of BPD
70-80%
Differential for bipolar
- Medical: Esp thyroid, Cushing’s, iatrogenic
- Physical: Substance misuse
- Psychosis: schizophrenia, schizoaffective
- Neurodevelopmental: ADHD
- Neurodegenerative: Esp FTD
- Neurotic: Anxiety, PTSD
- Personality: Esp borderline personality disorder
Predominant symptom load in BPD
Depressive, therfore always ask about mania in depressive presentations
Mortality in BPD
Attempted suicide 25-50%
Completed suicide approx 10% (esp during mixed episode)
Life expectancy 5-10years less than general population
DSM-5 criteria for bipolar I
1 or more manic episodes with or without 1+ hypomanic/depressive episodes
DSM-5 criteria for bipolar II
1+ depressive episodes AND 1+ hypomanic episode
Definition of rapid cycling of mood
>=4 mood episodes of any pole in one calendar year
Poor prognosis, associated with increased suicide risk
More common in females
Clinical features of bipolar II
More chronic
More depressive
More rapid cycling
Shorter inter-episode periods
Common psychiatric comorbidities with bipolar
Anxiety (93% comorbidity for any anxiety disorder, esp social)
Substance misuse (71%)
Natural history of untreated BD
10 episodes in lifetime with inter-episode duration stabilising around 4th/5th episode
BPD relapse rate
40-50% within 1 year
>70% within 5 years
Prognosis of BPD on Lithium
7-10% no recurrence
45-50% some recurrence
40% persistent recurrence
Poor prognostic factors for BPD
- Poor employment Hx
- Male sex
- Treatment noncompliance
- Psychotic symptoms
- Alcohol abuse
Good prognostic factors for BPD
- Late onset
- Low physical comorbidity
- Low suicidal thoughts
Annual physical health checks for BPD
Every 3 months initially!
Weight: BMI, nutritional status, physical activity
Cardiovascular: Pulse, BP
Metabolic: HbA1c, fasting blood glucose, lipid profile
LFTs
If on Lithium: U+Es: incl Ca, and TFTs
Management of acute manic episode or mixed affective state
- Admission + assessment
- Stop antidepressant, if present
- Optimise antimanic or antipsychotic levels (e.g. Li, valproate), if taking
- Administer antipsychotic if manic
- Administer mood stabiliser if euthymic
- Administer short-term benzo if agitated
- Consider physical health interventions (e.g. pregnancy test, urine drug screens)
Antipsychotic treatment algorithm for manic episodes
- First line: Haloperidol, olanzapine, quetiapine, risperidone
- Second line: Alternative antipsychotic
- Third line: Add Lithium
- Fourth line: Add/switch lithium with valproate
- Drug-resistant: Consider ECT
Licensed treatments for bipolar prophylaxis
- First-line: Lithium, gold-standard, but must be continued for >2 years
- Valproate, olanzapine, quetiapine
- Li/valproate PLUS antipsychotic
- Carbamezapine, lamotrigine (carbamazepine better for manic relapse, lamotrigine mainly for depressive)
Most pts require antipsychotic + mood stabiliser
Treatment of depressive episode of bipolar
- Mild:?treat ?watchful waiting
- Moderate-severe: Olanzapine + SSRI (usually fluoxetine, caution for ppt mania), OR quetiapine (best evidence) as first-line
- Recent unstable mood/resistance to treatment: Lamotrigine as 2nd line
Length of maintenance treatment in bipolar depressive episode
8-12 weeks
Long-term management of bipolar, psychoeducation
- Illness: Nature, treatment, etc
- Medication: Efficacy + SEs
- Crisis plan: Noting early warning signs + effective responses
- Follow-up: Physical + psychological, incl. mobile monitoring
Long-term management of BPD, psychological
- Family-focused therapy: Psychoeducation of family + acceptance of illness/treatment + identification of warning signs/ppting stressors
- True colours: Mood monitoring via QIDS-SR and Altman SRM (depression and mania respectively)
- CBT for residual symptoms (not relapse rate)
- Social rhythm therapy: Aimed at reducing relapse rate + improving recovery by providing regular pattern of daily activities, improving sleep hygiene. e.g. day hospital)
Long-term management of BPD, social
Employment support groups, pre-vocational training
Maintaining factors for bipolar disorder
More/less sleep
Poor compliance
Chosen environment
Ethanol + street drugs
Biological aetiology of bipolar disorder
Genetics (Heritability 70%)
Paternal age >45