Test 1 Flashcards
Differentiate Psychosis, delusions, hallucinations, and illusions
Psychosis: inability to distinguish reality from fantasy, creates new realities, greatly varied sxs
Delusions: disturbances about perception of reality
Hallucinations: disturbances about perceptions in 5 senses
Illusion: misperception of real external sensory stimuli
What are 11 common meds implicated w/psychotic reactions
1) anticonvulsant
2) cardiovascular
3) antiparkinson (Levodopa, carbidopa)
* 4) dopamine over activity
5) amphetamine/cocaine
6) general anesthetics (ketamine, PCP)
7) glutamate
* 8) NMDA receptor antagonists
* 9) anticholinesterase drugs (nerve gases, organophosphates, insecticides
* 10) cannabis & EtOH
* 11) cocaine
What are the 4 NTs affected by Acute Alcohol Intoxication?
AAI NTs
1) more dopamine (excitability)
2) more endorphins
3) GABA (CNS depressant, calm, sleepy)
4) glutamate disruption (inhibits NMDA, decreased coordination, memory formation)
What are the 3 areas of the brain affected by Acute Alcohol Intoxication?
AAI brain areas
1) frontal
2) thalamus
3) middle cerebellar peduncle
Describe Delirium Tremens?
Delirium Tremens: acute delirium episode d/t alcohol withdrawal in alcoholic
sxs: nightmares, agitation, global confusion, disorientation, hallucinations (visual and auditory), hypertension, febrility, diaphoresis, autonomic hyperactivity (tachycardia, hypertension), severe tremors, paranoia
Differentiate Cocaine’s acute intoxication sxs and psychosis sxs
Cocaine
Acute: tachy, HTN, agitation, mydriasis, euphoria, fever
Psychosis: paranoia, auspiciousness, violence, delirium/delusions
What are common withdrawal sxs of Alcohol/Benzo's Caffeine Opiates Nicotine Cocaine
withdrawal sxs
Alcohol/Benzo’s: seizures, agitation, irritability, insomnia, delirium
Caffeine: HA, fatigue, depression
Opiates: vomiting, diaphoresis, myalgias, agitation, anxiety, insomnia
Nicotine: depression, wt gain, cravings, nausea
Cocaine: depression, insomnia, physical slowing, agitation, body aches
Describe ICU psychosis/syndrome
ICU psychosis/syndrome:
d/t environmental causes of sensory and sleep deprivation, OR medical
What can cause neuropsychiatric manifestations in SLE? how often?
SLE tx drugs (steroids) can cause NeuroPsychiatric SLE, occurring in 2/3 of SLE pts
What are the 3 common subtypes of Porphyria?
3 Porphyrias:
1) acute intermittent
2) variegate porphyria
3) coproporphyria?
Differentiate Schizophrenia, Schizophreniform, Schizoaffective, and Delusional disorders
Schizophrenia: >6mo of behavior changes, delusions, hallucinations
Schizophreniform: 1-6mo of schizophrenic changes
Schizoaffective Disorder: uninterrupted period of illness of (+)/(-) sxs w/Mood Disorder sxs too, and 2w of sxs w/o Mood sxs
Delusional: personality preserved, disturbances
What are (+) and (-) sxs that define schizophrenia?
Schizophrenia
(+): Delusions (esp Referential delusions and bizarre delusions, thought insertion, delusions of loss of control d/t outside forces), hallucinations, disorganized speech, bizarre/disorganized behavior, inappropriate affect
(-): diminution or loss of normal functions, 5As Alogia (poverty of speech), Affective blunting, Avolition/Apathy, Anhedonia (can’t achieve pleasure), Attentional impairment
What are main characteristics of schizophrenia subtypes? Paranoid Disorganized Catatonic Undifferentitaed Residual
Paranoid: prominent, persecutory/grandiose delusions, hallucinations, may predispose to suicidal behavior
Catatonic Type I: oscilates b/w Catatonic Stupor and Catatonic Excitement
Disorganized: disorganized speech and behavior
Residual: at least 1 schizophrenic episode, but clinical picture w/o strong (+) sxs
Undifferentiated: 90% of dxs
What are Psychotic Disorder tx options?
ADEs?
Dopamine D2 receptor antagonists
1st gentypicals : chlorpramazine, haloperidol
D4, D4, 5HT, alpha, H1 receptor antagonists
2nd gen atypicals: risperidone, clozapine
- can cause tardive dyskinesia aka upregulation of D2 receptors
- *plus HAM Dope
Lithium, Benzos, anticonvulsants (carbamazepine, valproate, gabapentin),
What are types of delusional disorders, and differentiate
Erotomanic Type: delusions that another person, usually of higher status, is in love with them. (women > men)
Grandiose Type: delusions of inflated worth, power, knowledge, identity, or special relationship to a deity or famous person.
Jealous Type: delusions that the individual’s sexual partner is unfaithful. (paranoia, men> women)
Persecutory Type: delusions that the person has some physical defect or general medical condition (three main types are, parasitosis, dysmorphophobia, foul body odors, or halitosis).
Mixed Type: delusions characteristic of >1 of above with no predominance.
What are genetic and non-genetic factors in Schizophrenia?
Genetic: Glutamate pathways, heterogenous
plus environment, social, psychological, neurodevelopmental (PI3K-PKB-GSK3 cascade), Dopamine, neurodegeneration…
What are Schizphrenia assoc CNS structural changes?
Neuron disorganization (hippocampus) and migration failure,
Cortical pyramidal cells: in schizophrenics there can be smaller cell body (soma) size; decreased spine density, decreased dendritic length and lesser # of presynaptic terminals.
Possible accelerated synaptic pruning
frontal, medial, lateral, parietal, occipital, temporal lobes, corpus callosum, thalamus, cerebellum, basal ganglion, limbic system, hippocampus… esp DorsoLateral Prefrontal Cortex is underactive and dopamine deficient
What’s the CNS neurochemistry of Schizophrenia?
Overactivaton of subcortical D2 receptors, leads to (+) sxs
Deficit of Dopamine receptors in prefrontal cortex, leads to (-) sxs and cognitive deficits
What are Schizophrenia assoc functional changes?
Overactivation of D2 receptors, deficit of Dopamine receptors… maybe d/t Glutamatergic NMDA dysfunction, that allows excessive Dopamine stimulation that ends up killing the D2 receptors/neurons
What are the typical and atypical antipsychotics?
Typical = 1st gen, neuroleptics, conventional
-D2 receptor antagonist
Atypical = 2nd gen
-D3, 4 antagonist AND 5HT2a antagonist
What are the typical and atypical antipsychotics?
Typical antipsychotics TI: -Phenothiazines = Chlorpromazine, Thioridazine, Perphenazine, Trifluoperazine, Fluphenazine -Haloperidol -Pimozide -Molidone -Loxapine -Thiothixene Atypical Antipsychotics TI: -Aripiprazole, Brexipiprazole --Cariprazine -Asenapine, Clozapine, Olanzapine, Quetiapine -Iloperidone, Lurasidone, Paliperidone, Risperidone, Ziprasidone
What are the ADEs of typical antipsychotics? (hate HAM and Dope)
typical ADEs: worsens (-) sxs, early onset extrapyramidal sxs (tx w/anticholinergics or Propranolol for akathisia), *neuroleptic malignant syndrome, hyperprolactinemia (assoc breast enlargement, irregular periods, galactorrhea)
Atypicals: wt gain, metabolic syndrome (*esp Olanzapine)
both: anticholinergic, orthostatic, long QT, sedation, cognition, lens opacities, priapism, seizures, gambling/high-risk behaviors
what are drug-drug and drug-disease interactions of antipsychotics
antipsychotics interacts w/
-cytochrome P450, esp CYP3A4 and 2D6
smoking induces CYP1A2
additive/contradicting effects w/long QT, CNS depressants (benzos), amphetamines and pressors, antiHTNs, AChE inhibitors, Levodopa, Metoclopramide
What are Clozapine’s unique adverse and good effects?
Clozapine:
constipation, higher risk seizures, agranulocytosis, sialorrhea
*agranulocytosis, seizures, myocarditis, other cardiopulmonary effects
use with refractory mood disorders
What are Antipsychotics prescribing general rules?
Antipsychotics:
- Clozapine preferred in tx refractory pts
- only use 2 simultaneously during cross-titration
What are the 4 main types of anxiety disorders
anxiety 1 substance 2 associations (trauma, OCD) 3 generalized = GAD 4 intermittent acute (agoraphobia, other phobias, panic attacks)
What are anxiety related brain changes? structure and function
Anxiety brain:
loss of brain volume
loss of synapses in hippocampus/prefrontal cortex (memory/selfcontrol)
increased amygdala activity (fear)
What are generalized anxiety tx options?
GAD tx:
SSRIs
CBT
Relaxation
Describe panic attacks/disorder, and tx?
Panic attack/disorder:
sudden irrational attacks of fear causing tremors, nausea, shortness of breath, dizziness, hyperventilation, chest constriction, tachycardia, agitation.
Intense worry about experiencing further panic attacks or fear of going where prior stressful event occurred (PTSD).
tx: CBT, SSRIs, TCAs, psychotherapy
Describe social anxiety disorder, and tx?
Social anxiety disorder:
irrational fear to event/someone that poses no/minimal threat, avoiding social situations, and actual physical sxs of anxiety while in social situations (sweaty palms, SOB, dizziness, nausea, diaphoresis, speech difficulties)
tx: CBT, counseling, meds
What is Agoraphobia? tx?
extreme irrational fear of being in public places, crowds, open areas, often starts with panic or anticipatory anxiety, leads to strict avoidance.
tx: desensitizaton, flooding (provoking exposure in controlled environment), graded exposure, support groups
What are substances that can start and exacerbate anxiety/panic?
what withdrawal of substances does the same?
Tx?
CNS stimulants: marijuana amphetamines (Adderil, Ritalin) Caffeine, Ephedrine MDMA (ecstasy), Mephedrone, MDPV (bath salts) Cocaine Methamphetamine
Withdrawal of EtOH and CNS depressants
Tx: SSRIs
Diseases that can cause anxiety related sxs?
Hyperthyroidism Chronic obstructive pulmonary disease Asthma Drug abuse and withdrawal Chronic pain Irritable bowel syndrome Rare tumors (ex., pheochromocytoma)
other diseases assoc w/anxiety?
Cardiac disorders Cerebrovascular disorders Minor and Major Cognitive Disorders Hypertension Gastrointestinal problems Genitourinary difficulties Immune deficiencies/opportunistic infections Headache and other pain syndromes.
Differentiate OCD Obsessions from Compulsions
OCD
Obsessions: recurrent or pressistent obtrusive ideas, impulses, images causing anxiety
Compulsions: excessive repetitive behaviors or mental acts
What are features of OCD spectrum? tx?
OCD Spectrum: Obsessive-compulsive disorder Body dysmorphic disorder Hoarding disorder Trichotillomania (hair-pulling disorder) Excoriation (skin- picking disorder) Often an overlap
Tx: SSRI, esp Clomipramine (TCA)+ Fluvoxamine, antipsychotics
How is amygdala involved in fear conditioning? structures and functions or
dorsal PAG
ventral PAG
lateral nucleus
Amygdala responds to innate and conditioned fears:
Innate fears goes through dorsal PAG (periaqueductal gray)
Conditioned fears goes through ventral PAG
Lateral nucleus receives input from thalamus and indirectly from cortex, where unconditioned stimulus and conditioned stimulus converge, and CS can be strengthened
Differentiate hippocampus vs amygdala in fear conditioning
Amygdala has Implicit, Pavlovian fear conditioning, where if it detects danger it initiates responses through hypothalamus or brainstem
Hippocampus is Explicit learning
How would a pt w/o amygdala behave?
w/o amygdala, inability to have implicit learning or experience fear
What’s found in amygdala vs prefrontal cortex activity in anxiety pts?
Anxiety has increased Amygdala activity
Decreased Prefrontal cortex activity (esp VentroMedial PFC, area related to extinction learning and inhibiting emotional responses)
What are changes in Hippocampus w/PTSD?
Hippocampus is smaller in PTSD pts
What are changes in amygdala w/PTSD
Left Amygdala and anterior cingulate cortex are smaller in PTSD pts, w/INCREASED activity
What are changes in vmPFC w/PTSD
Reduced vmPFC in PTSD pts in response to emotional or threatening cues (area related to extinction learning and inhibiting emotional responses)
What are changes in ACC w/PTSD
Reduced rostral ACC activity in response to emotional or threatening cues, BUT
Increased activity in dorsal ACC during fear conditioning, extinction learning recall, and response selection
What are possible risk factors for PTSD
Genetic predisposition w/reduced hippocampal volume
abnormal medial prefrontal cortex activity
greater amygdala activation in response to (-) emotional stimuli, and greater amygdala activity in general
What are defining features of PTSD?
1) Direct recipient/witness/knowledge of catastrophic trauma w/intense response of fear/helplessness/horror
2) persistent avoidance/numbing, Feelings of intense fear, dreadfulness or helplessness, psychological numbness, interpersonal, social, educational, and vocational dysfunctions
3) relive the traumatic events
4) hyperarousal
5) **>1mo
6) resulting in life impairment
7) blaming self/others
8) reckless behavior
What are causes of PTSD?
biological
Biology: hypersensitivity of HPA axis, increased activity in amygdala, hypothalamus, locus ceruleus, and PAG (periaquaductal gray), and dysregulation of stress hormones
establish ddx of PTSD
Acute stress disorder: Symptoms last minimum 2 days and maximum 4 weeks (< 1 mo.)
Depression: May occur following traumatic event; disturbances in energy, sleep, appetite, loss of interest, suicidal ideation and intention.
Specific phobias: Symptoms of fear and avoidance triggered by situations,but not re-experiencing spontaneously.
Panic disorder: Recurrent, unexpected panic attacks, not triggered by recall of trauma
Generalized anxiety disorder: Constant worrying or obsession about small or large concerns, trouble concentrating, trembling, but not occur due to traumatic event.
Adjustment disorders: Specific stressors leading to mood, anxiety, worry, sleep disturbances, inability to cope.
Dissociative disorders:Persistent or recurrent feelings of detachment, and estrangement from oneself (depersonalization). Absence of re-experiencing and hyper arousal symptoms.
Obsessive compulsive disorder: Recurrent intrusive thoughts, leading to anxiety, may be accompanied by compulsions, rituals, or activities to counteract the anxiety and not related to a traumatic experience.
Substance abuse or medically: Medical history, symptoms onset and resolution induced symptoms are associated with medical condition(s) and/or abuse of substances.
Malingering: inconsistency in symptom presentation, poor work record, discrepancies in the capacity for working vs. ability to participat in recreation and entertainment activities are common.
What are PTSD tx?
1st line: SSRIs (Fluoxetine, Paroxetine, CItalopram) or Venlaflaxine (SNRI)
2nd line: SNRI
3rd line: TCA or Mertazapine (atypical antipsychotic)
If response, tx for 1yr. If no response, try next line
Which neural circuits are affected in OCD?
Circuit dysfunctions in striatum
Increased activity in basal ganglia (esp caudate nucleus head), anterior cingulate cortex (ACC), and orbitofrontal cortex activity and gray matter
Less striatal gray matter
Larger thalamic volumes, Left amygdala, Larger corpus callosum, Larger Lt orbital frontal cortex, white matter fiber density, axonal diameter and myelination in certain white matter tracks