Clin Med - Bipolar Flashcards
Defects that may contribute to pathophysiology of bipolar disorder
- Involvement of cortical, limbic, basal ganglia, cerebellar structures
- Defects in mitochondrial energy production
- Abnormalities in electron transport chain and G-protein coupled receptor signaling
What is likelihood a first-degree relative of a patient with bipolar disorder will also develop the disease?
7 times more likely
Is bipolar I or bipolar II more common in females?
Bipolar II MC in females
What is the one symptom that automatically gets a diagnosis if Bipolar I disorder?
manic episode
- if EVER have, dx is bipolar I
Other than manic episode, what are other sx seen in bipolar I disorder?
- hypomanic episode
- major depressive episode (common but NOT required for dx)
DSM description and time frame for dx of manic episode?
At least one week (7 days) period
- abnormality, persistently elevated, expansive, irritable mood AND
- Abnormally and persistently increased goal-directed activity or energy
What must the manic episode mood disturbance in bipolar I dx be severe enough to do? (3)
- Cause marked impairment in social or occupational functioning
- Necessitate hospitalization to prevent harm to self or others
- Psychotic features (hallucinations, delusions, etc.)
For both manic and hypomanic dx, three of the following sx (four if the mood is only irritable) must be present:
- Inflated self-esteem or grandiosity
- Decreased need for sleep
- More talkative than normal or pressure to keep talking
- Flight of ideas or subjective experience that thoughts are racing
- Distractibility
- Increased goal-directed activity (socially, work/school, sexually) or psychomotor agitation
- Excessive involvement in activities that have a high potential for painful consequences (shopping spree, sex, bad business investments)
What must sx NOT be attributed to to be dx as bipolar I
physiological effects of substance or other med condition
When should use specifier “with rapid cycling” ?
only used when pt with bipolar I disorder have multiple mood episodes within 1 year
What must be present for dx of bipolar II dx
At least one current or past hypomanic episode AND criteria for one current or past major depressive episode
What cannot have ever occurred for dx of bipolar II ?
manic episode (bc then is bipolar I)
Time frame for hypomanic episode
min 4 days (bipolar I is 7 days)
Describe activity of hypomanic episode
- Distinct period of abnormally and persistent elevated, expansive, or irritable mood and abnormally and persistently increased activity of energy
- Uncharacteristic of individual with not symptomatic
What is hypomanic episode not severe enough to cause (2)
- Marked impairment in social or occupational functioning OR
- Hospitalization
Are psychotic features present in bipolar II?
NO, if psychotic features then bipolar I
what is often the dominant mood in bipolar II?
depression
Describe onset of bipolar II
- Mean onset age is mid 20s
- Most often begins with depressive episode, not recognized as bipolar II until hypomania episode occurs later. May experience several episodes of depression prior to first recognized hypomanic episode
- May be preceded by anxiety, substance abuse, eating disorders (complicate detection)
Differences between mania and hypomania
Mania
- 1 week, more severe, more impairment, more severe consequences
Hypomania
- 4 days, less severe, less impairment, less severe consequences
Why is bipolar disease often misdiagnosed as major depressive disorder?
- Patients often fail to mention presence of manic or hypomanic (MC) symptoms in past or current episode
- Screening for bipolar disorders in patients who present with depressive sx is rarely done
- Av 8 years from time of first presentation to correct dx of bipolar disorder