Introduction to Pyschiatry

Question 1

Describe Schizophrenia

Answer 1

• Lifetime prevalence= 0.5%
• Thought disorder
• Disorder of PFC function
• Excess dopamine hypothesis
• Treated with dopamine antagonists
• Delusions, hallucinations, disorganised speech, disorganised/ catatonic behaviour, negative symptoms

Question 2

Describe depressive disorders

Answer 2

-Lifetime prevalence= 12-20%
-Mood disorder
-Disorder of limbic function?
-Monoamine deficiency hypothesis
-Treated with
=Diet, exercise
=Drugs= SSRI, SNRI, TCA, MAOI, Atypical antidepressants
=Psychotherapy
=ECT

Question 3

Describe anxiety disorders

Answer 3

-Lifetime prevalence 33%
-Mood disorder
-Disorder of limbic function?
-Central role of amygdala
-Treated with
=Psychotherapy
=Drugs= SSRI, SNRI, TCA, Others

Question 4

Describe personality disorders

Answer 4

• Community prevalence (any PD)= 12%
• Cluster A= Odd/ eccentric= tendency for negative thoughts about intentions of others
• Cluster B= dramatic/ emotional/ erratic (borderline, narcisstic, antisocial)
• Cluster C= anxious/ fearful (avoidant, dependent, obsessive-compulsive)