Lecture final Flashcards
What are the brain differences in depression?
- less white & gray matter
-frontal cortex, atypical fMRI
How much is the concordance rate in twin studies for major depressive disorder?
30-40%
What is the difference between Bipolar I and Bipolar II?
Bipolar I: depression & mania
Bipolar II: depression & hypermania (less severe)
What are the symptoms of Mania for bipolar?
-prolonged period of overly happy
-extreme irritability
-racing thoughts, easily distracted
-little sleep
-unrealistic beliefs in one’s abilities
-impulsive, high risk behavior
-increased goal oriented
What are the symptoms of depression in bipolar?
-long periods of worry & emptiness
-loss of interest in enjoyable activities
-feeling tired, run down
-problems concentrating, remembering, making decisions
-restless or irritable
- changes in eating, sleeping
-suicide & death thoughts
-attempting suicide
-longer periods of lack of energy, motivation & interest
What are causal factors in bipolar disorders?
- disruption of calcium channels & proteins
-AP regeneration to Nodes of Ranvier
When do you use Lithium in Bipolar?
- for Bipolar depression
-mood stabilizer (stops mania)
What plays a role in major depressive disorders?
Seratonin
What plays a role in major bipolar disorders?
GABA & Glutamate
What is anxiety?
- chronic fear persisting in absence of direct threat
What is the most prevalent psychiatric disorder?
Anxiety
Are women twice as likely to suffer anxiety disorders than men?
YES! Woman 2x more
When is anxiety most prevalent?
Early to late adulthood
Does anxiety go down as you age?
Yes
What is generalized anxiety disorder?
Stress response and extreme feeling of worry and anxiety
What is post traumatic stress disorder?
Persistence pattern or psychological distress following exposure to extreme stress
What is the most prescribed drug?
Benzodiazepines
What are side effects of Benzos for anxiety?
-nausea
-ataxia
-tremor
-addictive
What are side effects of seratonin for anxiety?
- nausea
-dizzy
-insomnia
-headache
What are side effects of antidepressant drugs for anxiety?
Not effective
Is there a genetic link to anxiety?
No definite genes
No structural difference in anxiety
Is there a structural difference in depression?
Yes
What is seasonal affective disorder?
- happens every season
-cycling severe depression and elevated mood
What are symptoms of seasonal affective disorder? BEAR
-intense hunger
-gain weight
-sleep more
What is seasonal affective disorder?
- every winter
-cycle severe depression and elevated mood
-intense hunger
-gain eight
-sleep more
BEAR
What is the most prescribed medication for depression?
SSRI’s (Selective Monamine Reuptake Inhibitors)
What pharmacological treatment did they discontinue for depression?
-MAO’s
(monamine Oxidase inhibitors)
- discontinued because high risk of stroke and high blood pressure
What pharmacological treatment for depression if none of them work?
Atypical antidepressants
Which treatment do they use if none of them work for depression?
Atypical
What is considered catch all?
Atypical
What is tricyclic antidepressants?
- treatment for depression
- blocks reuotake of norepinephrine & seratonin
-safer than MAO’s
What are the two ways depression can be?
- Reactive triggered by a negative experience (external cause that can be worked on)
- Endogenous which has no apparent cause (don’t know)
When is it considered major depression? (Unipolar)
Lasts for 2 weeks
What is dysthymia?
-long lasting
-lethargic
-lack of energy & joy in life
How long does dysthymia last?
-long lasting
-at least 2 years
What is it called when you have both depressions?
Double depression
Are women diagnosed far more often than men for depression?
Yes
What is anhedonia?
Inability to experience pleasure
What are general symptoms of major depression (2 weeks+)?
-sadness
-worthlessness
-anhedonia: can’t experience pleasure
-suicidal behavior
How often do women experience postpartum depression?
- approx 19% pregnancies
-20% of women
How often is seasonal affective disorder from depression cases?
- reoccurs 10-20%
-common in Alaska, Canada and scandavia (coldest areas)
Percentages for major depressive episodes in U.S. adolescents (2020)?
-4.1 mil adolescents
-17% of U.S. pop 12-17
-higher among females (25.2%) compared to males (9.2%)
-highest amount adolescents 2 or more races (29.9%)
What is depression?
- exceeds 2 weeks
-feeling sadder to loss
What is difference between grief and depression?
Grief: recall happy moments
Depression: sense of worthlessness, no memory of good times
When was a major depressive episode highest? What age group?
18-25 (17%)
How much more was females more prevalent for depression disorder?
25%
Which depression hardest to treat?
Endogenous depression
What is greater concentration of genetics?
Bipolar
What are tumors?
- mass of cells that grows independently of rest of body (cancer)
What are the 3 types of tumors?
-meningoma
-infiltrating
-metastatic
How many of brain tumors are meningiomas?
20%
What are meningioma tumors?
-encapsulated in menengies
- growing with own membrane
-usually benign, surgically removeable
What are most brain tumors?
Infiltrating!
-grow through surrounding tissue
-malignant (difficult to remove or destroy)
How much of brain tumors are metastatic?
10%- they originated elsewhery
Where do metastatic tumors originate?
Usually in lungs