Psychotic Disorders (lec 3) Flashcards
Lecture objectives: Define psychosis • Identify the DSMIV criteria for the five most common psychotic disorders and be able to differentiate between them • Describe the medications used to treat psychotic disorders • Understand the common side effects of these medications and their management
Disorganized Speech types (5)
- derailment, tangentiality
- incoherence, world salad
- neologism
- echolalia
- blocking, paucity
Disorganized or Catatonic Behavior def
activity is not goal directed
inability to complete simple tasks
immobility
waxy flexibility
causes of psychosis (12)
- substance intox/withdrawal
- med SEs: steroids, stimulants, dopamine agonists, anticholinergics
- delirium
- dementia
- denocrine (thyroid)
- CNS infection (syphilis)
- epilepsy (temporal)
- Vit deficiency (b12)
- Autoimmune (SLE)
- Huntigton’s
- Wilson’s
- Psychiatric d/z: psychotic, mood, personality
Evaluation of Psychosis (10 elements)
- HPI
- Past psych hx
- substance use hx
- family hx
- social hx
- PMH
- physical exam (neuro)
- MSE
- labs: UDS, UA, CBC, CMP, TSH, RPR, B12
- EEG, imaging
Psychotic Disorders (7)
- Schizophrenia
- Schizophreniform disorder
- Schizoaffective disorder
- Delusional disorder
- Brief psychotic disorder
- Shared psychotic disorder
- substance induced, due to general medical condition or not otherwise specified
Schizophrenia: prevalence, affects who, when?
lifetime prevalence 0.5% to 1.5% worldwide (high heritability: 1st degree relative’s risk is 10x the general population)
males=females for prevalence and:
earlier age of onset
Smales early 20s, females late 20s
Pathophysiology of schizophrenia
progressive gray matter deficits (slide 12?)
Schizophrenia: negative sxs
alogia (poverty of speech) affective blunting
anhedonia
avolition
attentional impairment
Schizophrenia: positive sxs
hallucinations
delusions
disorganized behavior
disorganized speech
Schizophrenia course
- chronic
- abrupt onset vs. prodrome
- negative sxs appear first
- complete remission is uncommon
- decreased life expectancy
Schizophrenia disorder life expectancy
men die 15 yrs earlier, women 12 (primarily due to ischemic heart disease & cancer)
- 5% will commit suicide
- 10% of completed suicides are schizophrenia pts
Schizophrenia DSM-IV dx criteria
A. at least 1 MONTH of 2+ of the following: delusions, hallucinations, disorganized speech, disorganized or catatonic behavior, negative sxs (only 1 sx if bizarre delusions or AH or running commentary or 2+ voices conversing)
B. significant social/occupational DYSFUNCTION in 1+ area
C. duration 6 MONTHS: 1 mo criterion A + prodrome/residual period
D. schizoaffective & mood d/o are ruled out (mood episodes are brief if present)
E. not due to substance or general medical condition
-if autistic/PDD must have prominent delusions/hallucinations at least 1 mo
Schizophrenia paranoid subtype
1+ delusion or frequent AH
not prominent: disorganized speech/behavior, inappropriate affect
Schizophrenia disorganized subtype
- prominent disorganized speech & behavior
- flat or inappropriate affect
- not catatonic
Schizophrenia catatonic subtype
clinical picture dominated by at least 2:
- motoric immobility/catalepsy, waxy flexibility, stupor
- excessive motor activity (purposeless)
- extreme negativism (resists movement), mutism
- inappropriate/bizarre posturing, stereotypies, prominent mannerisms/grimacing
Schizophrenia undifferentiated subtype
meets criteria for schizophrenia, but no subtype
Schizophrenia residual subtype
ABSENCE of prominent hallucinations, delusions or disorganized speech/behavior or catatonia
PRESENCE of negative symptoms or 2+ attenuated positive symptoms
Mental Status Exam (MSE)Appearance
age, hygiene/clothing (disheveled, malodorous, unkempt)
MSE: Behavior (3)
- cooperativeness & relation (uncooperative/combative, guarded/suspicious)
- eye contact (poor, looking around room, watching door, looking over shoulder
- motor activity (hypo or hyper; rocking, pacing, grimacing, or other abnormal movements)
MSE: Affect
Appropriate (congruent w/mood)
Inappropriate (constricted/blunted/flat vs. labile, laughing inappropriately)
MSE: Mood
whatever pt tells you, in quotes
MSE: Speech
quantity
amplitude
rate
tone
MSE: thought process
logical vs. illogical
tangential
circumstantial
Hallucinations: definition
sensory perceptions in absence of stimulus:
- auditory
- visual
- tactile
- olfactory
- gustatory