Psych Flashcards
Patient presents with excessive daytime sleepiness, cataplexy, sleep paralysis, and hallucinations. What is this and what causes it?
Narcolepsy
Due to a loss of orexin aka hypocretin-2 (promotes wakefulness, secreted by the hypothalamus) via an autoimmune reaction
Clinical triad of ADHD
inattentiveness, hyperactivity, and impulsivity occurs in 2+ settings (home and school)
Associated with dec frontal lobe volume/metabolism
Patient has hypnagogic (just before sleep) and hypnopompic (just before awakening) hallucinations
Narcolepsy
Who is autism more common in?
Boys
Children with genetic disorders like Down syndrome, Fragile X, Rett syndrome
What part of the brain is implicated in reward? What neurotransmitter is involved?
Nucleus accumbens and dopamine
Patient presents with anxiety for 8 months that is unrelated to a specific person, situation or event
Generalized anxiety disorder: anxiety for longer than 6 months
Ego dystonic
In OCD, patients realize their compulsion or obsession is irrational, but they are unable to stop
PTSD vs Acute Stress Disorder
PTSD is diagnosed if S/S have persisted for over 1 month, Acute Stress Disorder is diagnosed if the S/S last between 3 days and 1 month
Manic Episodes vs Hypomanic episodes
Manic – 1 week of the following: DIG FAST – Distractibility, Irresponsibility, Grandiosity (high self esteem), Flight of idease, Activity increase/Agitation, Sleep deficit, Talkativeness
Hypomanic episode: like a manic episode but not severe enough to cause marked impairment or to necessitate hospitalization
o Lasts at least 4 days
Major Depressive Disorder symptoms
5/9 of the following plus reported depressed mood.
SIG E CAPS: Sleep disturbance Interest loss Guilt Energy loss Concentration problems Appetite/weight changes Psychomotor slowing Suicidal ideations
How long do episodes of Major Depressive Disorder last?
At least 2 weeks
What is dysthymic disorder
Depressed mood that is experienced most days for at least a 2 year period (less severe depressed mood than Major Depressive Disorder)
Type 1 vs Type 2 Bipolar Disorder
Type 1: at least one manic episode (w/ or w/o an episode of hypomania or depression)
Type 2: presence of a hypomanic and a depressive episode
Neurotransmitter changes in Huntington’s
Inc dopamine
Dec GABA and dec ACh
Neurotransmitter changes in Parkinson’s
Dec dopamine
Inc ACh
Neurotransmitter changes in anxiety. Treatment?
Inc NE
Dec GABA, Dec serotonin (5-HT)
Treat with Buspirone to inc serotonin (takes a couple weeks to kick in)
Neurotransmitter changes in depression
Dec NE, serotonin, and dopamine
Neurotransmitter changes in schizophrenia
Inc dopamine
What kind of hallucination is most common in a psychiatric illness?
Auditory > visual
*Schizophrenic hallucinations are present whether the patient’s eye are open or not
(visual hallucinations are more common in drug intoxication)
Diagnosis of schizophrenia
2+ of the following lasting >6 months: Delusions (firmly held beliefs) Hallucinations (usually auditory) Disorganized speech Disorganized/catatonic behavior Negative symptoms- flat affect, social withdrawal, lack of motivation, lack of speech
**Requires functional decline
Malingering vs Factitious disorders
Malingering: consciously fake an illness to attain a specific secondary (external) gain like avoiding work or obtaining compensation
Factitious disorder: consciously fake an illness to assume a “sick role” and to get medical attention (primary [internal] gain)
Types of Personality Disorders
Clusters A, B, and C
“The weird, the wild, and the worried”
Patient has an eccentric appearance and has magical thinking
Cluster A: Schizotypal
t= thinking
Patient thinks that the rules don’t apply to them. Other people think he is charming.
Cluster B: Antisocial