Psychiatry - Pathology (1) Flashcards
(34 cards)
1
Q
Infant deprivation effects
- Long-term deprivation of affection results in:
- Deprivation for > 6 months
- Severe deprivation
A
- Long-term deprivation of affection results in:
- Decreased muscle tone
- Poor language skills
- Poor socialization skills
- Lack of basic trust
- Anaclitic depression (infant withdrawn / unresponsive)
- Weight loss
- Physical illness
-
The 4 W’s:
- Weak
- Wordless
- Wanting (socially)
- Wary
- Deprivation for > 6 months
- Can lead to irreversible changes.
- Severe deprivation
- Can result in infant death.
2
Q
Child abuse
- For each
- Evidence
- Abuser
- Epidemiology
- Physical abuse
- Sexual abuse
A
- Physical abuse
- Evidence: Healed fractures on x-ray (e.g., spiral fractures are highly suggestive of abuse), burns (e.g., cigarette, scalding), subdural hematomas, pattern marks/bruising (e.g., belts, electrical cords), rib fractures, retinal hemorrhage or detachment
- Abuser: Usually biological mother
- Epidemiology: ~3000 deaths/yr in U.S., 80% < 3 yr old
- Sexual abuse
- Evidence: Genital, anal, or oral trauma; STDs; UTIs
- Abuser: Known to victim, usually male
- Epidemiology: Peak incidence 9–12 years old
3
Q
Child neglect
- Definition
- Evidence
A
- Definition
- Failure to provide a child with adequate food, shelter, supervision, education, and/or affection.
- Most common form of child maltreatment.
- As with child abuse, child neglect must be reported to local child protective services.
- Evidence
- Poor hygiene, malnutrition, withdrawal, impaired social/emotional development, failure to thrive.
4
Q
Attention-deficit hyperactivity disorder
- Definition
- Findings
- Treatment
A
- Definition
- Childhood and early-onset disorder
- Onset before age 12.
- Limited attention span and poor impulse control.
- Normal intelligence, but commonly coexists with difficulties in school.
- Continues into adulthood in as many as 50% of individuals.
- Findings
- Characterized by hyperactivity, impulsivity, and/or inattention in multiple settings (school, home, places of worship, etc.)
- Associated with decreased frontal lobe volume/metabolism.
- Treatment
- Methylphenidate, amphetamines, atomoxetine, behavioral interventions (reinforcement, reward).
5
Q
Conduct disorder
A
- Childhood and early-onset disorder
- Repetitive and pervasive behavior violating the basic rights of others (e.g., physical aggression, destruction of property, theft).
- After age 18, many of these patients will meet criteria for diagnosis of antisocial personality disorder.
6
Q
Oppositional defiant disorder
A
- Childhood and early-onset disorder
- Enduring pattern of hostile, defiant behavior toward authority figures in the absence of serious violations of social norms.
7
Q
Tourette syndrome
- Definition
- Findings
- Treatment
A
- Definition
- Childhood and early-onset disorder
- Onset before age 18.
- Lifetime prevalence of 0.1–1.0% in the general population
- Associated with OCD and ADHD
- Findings
- Characterized by sudden, rapid, recurrent, nonrhythmic, stereotyped motor and vocal tics that persist for > 1 year.
- Coprolalia (involuntary obscene speech) found in only 10–20% of patients.
- Treatment
- Antipsychotics and behavioral therapy.
8
Q
Separation anxiety disorder
- Definition
- Treatment
A
- Definition
- Childhood and early-onset disorder
- Common onset at 7–9 years.
- Overwhelming fear of separation from home or loss of attachment figure.
- May lead to factitious physical complaints to avoid going to or staying at school.
- Treatment
- SSRIs and relaxation techniques/behavioral interventions.
9
Q
Pervasive developmental disorders
- Definition
- Examples
A
- Definition
- Characterized by difficulties with language and failure to acquire or early loss of social skills.
- Examples
- Autism spectrum disorder
- Rett disorder
10
Q
Autism spectrum disorder
- Definition
- Findings
A
- Definition
- Pervasive developmental disorder
- Must present in early childhood
- More common in boys
- Findings
- Characterized by poor social interactions, communication deficits, repetitive/ritualized behaviors, and restricted interests.
- May or may not be accompanied by intellectual disability
- Rarely accompanied by unusual abilities (savants).
11
Q
Rett disorder
- Definition
- Findings
A
- Definition
- Pervasive developmental disorder
- X-linked disorder seen almost exclusively in girls (affected males die in utero or shortly after birth).
- Findings
- Symptoms usually become apparent around ages 1–4, including regression characterized by loss of development, loss of verbal abilities, intellectual disability, ataxia, and stereotyped hand-wringing.
12
Q
Neurotransmitter changes with these diseases
- Alzheimer disease
- Anxiety
- Depression
- Huntington disease
- Parkinson disease
- Schizophrenia
A
- Alzheimer disease
- Decreased ACh
- Anxiety
- Increased norepinephrine
- Decreased GABA
- Decreased 5-HT
- Depression
- Decreased norepinephrine
- Decreased 5-HT
- Decreased dopamine
- Huntington disease
- Decreased GABA
- Decreased ACh
- Increased dopamine
- Parkinson disease
- Decreased dopamine
- Increased 5-HT
- Increased ACh
- Schizophrenia
- Increased dopamine
13
Q
Orientation
- Definition
- Common causes of loss of orientation
- Order of loss
A
- Definition
- Patient’s ability to know who he or she is, where he or she is, and the date and time.
- Often abbreviated in the medical chart as “alert and oriented × 3” (AO×3)
- Common causes of loss of orientation
- Alcohol, drugs, fluid/electrolyte imbalance, head trauma, hypoglycemia, infection, nutritional deficiencies.
- Order of loss
- 1st—time
- 2nd—place
- Last— person
14
Q
Amnesias
- Retrograde amnesia
- Anterograde amnesia
- Korsakoff amnesia
- Dissociative amnesia
A
- Retrograde amnesia
- Inability to remember things that occurred before a CNS insult.
- Anterograde amnesia
- Inability to remember things that occurred after a CNS insult (no new memory).
- Korsakoff amnesia
- Classic anterograde amnesia caused by thiamine deficiency and the associated destruction of mammillary bodies.
- May also include some retrograde amnesia.
- Seen in alcoholics, and associated with confabulations.
- Dissociative amnesia
- Inability to recall important personal information, usually subsequent to severe trauma or stress.
- May be accompanied by dissociative fugue (abrupt travel or wandering during a period of dissociative amnesia, associated with traumatic circumstances).
15
Q
Cognitive disorder
A
- Significant change in cognition (memory, attention, language, judgment) from previous level of functioning.
- Associated with abnormalities in CNS, a general medical condition, medications, or substance use.
- Includes delirium and dementia.
16
Q
Delirium
- Definition
- Findings
- Treatment
A
- Definition
- “Waxing and waning” level of consciousness with acute onset
- Delirium** = changes in sensorium.**
- Usually 2° to other illness (e.g., CNS disease, infection, trauma, substance abuse/withdrawal, metabolic/electrolyte disturbances, hemorrhage, urinary/fecal retention)
- Most common presentation of altered mental status in inpatient setting
- Check for drugs with anticholinergic effects.
- Often reversible.
- “Waxing and waning” level of consciousness with acute onset
- Findings
- Rapid decrease in attention span and level of arousal
- Characterized by disorganized thinking, hallucinations (often visual), illusions, misperceptions, disturbance in sleepwake cycle, cognitive dysfunction.
- Abnormal EEG.
- Treatment
- Identify and address underlying cause.
- Optimize brain condition (O2, hydration, pain, etc.).
- Antipsychotics (mainly haloperidol).
- T-A-DA approach (Tolerate, Anticipate, Don’t Agitate) helpful for management.
17
Q
Dementia
- Definition
- Findings
- Irreversible causes
- Reversible causes
A
- Definition
- Gradual decrease in intellectual ability or “cognition” without affecting level of consciousness.
- A patient with dementia can develop delirium (e.g., patient with Alzheimer disease who develops pneumonia is at increased risk for delirium)
- Increased incidence with age.
- Usually irreversible.
- In elderly patients, depression may present like dementia (pseudodementia).
- Findings
- Characterized by memory deficits, aphasia, apraxia, agnosia, loss of abstract thought, behavioral/personality changes, impaired judgment.
- “Dememtia” is characterized by memory loss.
- EEG usually normal.
- Characterized by memory deficits, aphasia, apraxia, agnosia, loss of abstract thought, behavioral/personality changes, impaired judgment.
- Irreversible causes
- Alzheimer disease, Lewy body dementia, Huntington disease, Pick disease, cerebral infarcts, Creutzfeldt-Jakob disease, chronic substance abuse (due to neurotoxicity of drugs).
- Reversible causes
- NPH, vitamin B12 deficiency, hypothyroidism, neurosyphilis, HIV (partially).
18
Q
Psychosis
- Definition
- Hallucinations
- Delusions
- Disorganized speech
A
- Definition
- A distorted perception of reality (psychosis) characterized by delusions, hallucinations, and/or disorganized thinking.
- Psychosis can occur in patients with medical illness, psychiatric illness, or both.
- Hallucinations
- Perceptions in the absence of external stimuli
- e.g., seeing a light that is not actually present
- Delusions
- Unique, false beliefs about oneself or others that persist despite the facts
- e.g., thinking aliens are communicating with you
- Disorganized speech
- Words and ideas are strung together based on sounds, puns, or “loose associations.”
19
Q
Hallucination types
- Visual
- Auditory
- Olfactory
- Gustatory
- Tactile
- Hypnagogic
- Hypnopompic
A
- Visual
- More commonly a feature of medical illness (e.g., drug intoxication) than psychiatric illness.
- Auditory
- More commonly a feature of psychiatric illness (e.g., schizophrenia) than medical illness.
- Olfactory
- Often occur as an aura of psychomotor epilepsy and in brain tumors.
- Gustatory
- Rare.
- Tactile
- Common in alcohol withdrawal (e.g., formication—the sensation of bugs crawling on one’s skin).
- Also seen in cocaine abusers (“cocaine crawlies”).
- HypnaGOgic
- Occurs while GOing to sleep.
- HypnoPOMPic
- Occurs while waking from sleep
- “POMPous upon awakening”
20
Q
Schizophrenia
- Definition
- Etiologies / associations
- Prevalence
- Diagnosis
- Brief psychotic disorder
- Schizophreniform disorder
- Schizoaffective disorder
A
- Definition
- Chronic mental disorder with periods of psychosis, disturbed behavior and thought, and decline in functioning that lasts > 6 months.
- Associated with increased dopaminergic activity, decreased dendritic branching.
- Patients are at increased risk for suicide
- Etiologies / associations
- Genetics and environment contribute to the etiology of schizophrenia.
- Frequent cannabis use is associated with psychosis/schizophrenia in teens.
- Prevalence
- Lifetime prevalence—1.5% (males = females, blacks = whites).
- Presents earlier in men (late teens to early 20s vs. late 20s to early 30s in women).
- Diagnosis requires 2 or more of the following (first 4 in this list are “positive symptoms”):
- Delusions
- Hallucinations—often auditory
- Disorganized speech (loose associations)
- Disorganized or catatonic behavior
- “Negative symptoms”—flat affect, social withdrawal, lack of motivation, lack of speech or thought
-
Brief psychotic disorder
- < 1 month, usually stress related.
-
Schizophreniform disorder
- 1–6 months.
-
Schizoaffective disorder
- At least 2 weeks of stable mood with psychotic symptoms, plus a major depressive, manic, or mixed (both) episode.
- 2 subtypes: bipolar or depressive.
21
Q
Delusional disorder
A
- Fixed, persistent, untrue belief system lasting > 1 month.
- Functioning otherwise not impaired.
- Example: a woman who genuinely believes she is married to a celebrity when, in fact, she is not.
22
Q
Dissociative disorders
- Dissociative identity disorder
- Depersonalization / derealization disorder
A
- Dissociative identity disorder
- Formerly known as multiple personality disorder.
- Presence of 2 or more distinct identities or personality states.
- More common in women.
- Associated with history of sexual abuse, PTSD, depression, substance abuse, borderline personality, and somatoform conditions.
- Depersonalization / derealization disorder
- Persistent feelings of detachment or estrangement from one’s own body, thoughts, perceptions, and actions (depersonalization) or one’s environment (derealization).
23
Q
Mood disorder
A
- Characterized by an abnormal range of moods or internal emotional states and loss of control over them.
- Severity of moods causes distress and impairment in social and occupational functioning.
- Includes major depressive disorder, bipolar disorder, dysthymic disorder, and cyclothymic disorder.
- Psychotic features (delusions or hallucinations) may be present.
24
Q
Manic episode
- Definition
- Diagnosis
A
- Definition
- Distinct period of abnormally and persistently elevated, expansive, or irritable mood and abnormally and persistently increased activity or energy lasting at least 1 week.
- Often disturbing to patient.
- Diagnosis requires hospitalization or at least 3 of the following (manics DIG FAST):
- Distractibility
- Irresponsibility—seeks pleasure without regard to consequences (hedonistic)
- Grandiosity—inflated self-esteem
- Flight of ideas—racing thoughts
- Increase in goal-directed Activity/psychomotor Agitation
- Decreased need for Sleep
- Talkativeness or pressured speech
25
Hypomanic episode
* Like manic episode except mood disturbance is not severe enough to cause marked impairment in social and/or occupational functioning or to necessitate hospitalization.
* No psychotic features.
* Lasts at least 4 consecutive days.
26
Bipolar disorder
* Definition
* Bipolar I vs. II
* Treatment
* Cyclothymic disorder
* Definition
* Patient’s mood and functioning usually return to normal between episodes.
* Use of antidepressants can lead to increased mania.
* High suicide risk.
* Bipolar I vs. II
* Bipolar I defined by the presence of at least 1 manic episode with or without a hypomanic or depressive episode.
* Bipolar II defined by the presence of a hypomanic and a depressive episode.
* Treatment
* Mood stabilizers (e.g., lithium, valproic acid, carbamazepine), atypical antipsychotics.
* **Cyclothymic disorder**
* Dysthymia and hypomania
* Mlder form of bipolar disorder **lasting at least 2 years**.
27
Major depressive disorder
* Definition
* Symptoms
* Patients with depression typically have the following changes in their sleep stages:
* Persistent depressive disorder (dysthymia)
* Seasonal affective disorder
* Definition
* May be self-limited disorder, with major depressive episodes usually **lasting 6–12 months**.
* Episodes characterized by **at least 5** of the following 9 symptoms for **2 or more weeks**
* Symptoms must include patient-reported depressed mood or anhedonia and occur more frequently as the disorder progresses
* Symptoms (**_SIG_ _E_ _CAPS_**)
* **_S_**leep disturbance
* **_L_**oss of Interest (anhedonia)
* **_G_**uilt or feelings of worthlessness
* **_E_**nergy loss and fatigue
* **_C_**oncentration problems
* **_A_**ppetite/weight changes
* **_P_**sychomotor retardation or agitation
* **_S_**uicidal ideations
* Depressed mood
* Patients with depression typically have the following changes in their sleep stages:
* Decreased slow-wave sleep
* Decreased REM latency
* Increased REM early in sleep cycle
* Increased total REM sleep
* Repeated nighttime awakenings
* Early-morning awakening (important screening question)
* **Persistent depressive disorder (dysthymia)**
* Depression, often milder, **lasting at least 2 years**.
* **Seasonal affective disorder**
* Symptoms usually associated with winter season
* Improves in response to full-spectrum brightlight exposure.
28
Atypical depression
* Definition
* Findings
* Treatment
* Definition
* Differs from classical forms of depression.
* Most common subtype of depression
* Findings
* Mood reactivity (being able to experience improved mood in response to positive events, albeit briefly)
* “Reversed” vegetative symptoms (hypersomnia and weight gain)
* Leaden paralysis (heavy feeling in arms and legs)
* Long-standing interpersonal rejection sensitivity.
* Treatment
* MAO inhibitors, SSRIs.
29
Postpartum mood disturbances
* Definition
* Maternal (postpartum) “blues”
* Postpartum depression
* Postpartum psychosis
* Definition
* Onset within 4 weeks of delivery.
* **Maternal (postpartum) “blues”**
* 50–85% incidence rate.
* Characterized by depressed affect, tearfulness, and fatigue starting 2–3 days after delivery.
* **Usually resolves within 10 days**.
* Treatment: supportive.
* Follow-up to assess for possible postpartum depression.
* **Postpartum depression**
* 10–15% incidence rate.
* Characterized by depressed affect, anxiety, and poor concentration starting within 4 weeks after delivery.
* **Lasts 2 weeks to a year or more**.
* Treatment: antidepressants, psychotherapy.
* **Postpartum psychosis**
* 0.1–0.2% incidence rate.
* Characterized by delusions, hallucinations, confusion, unusual
behavior, and possible homicidal/suicidal ideations or attempts.
* Usually **lasts days to 4–6 weeks**.
* Treatment: antipsychotics, antidepressants, possible inpatient hospitalization, assessment of child safety.
30
Pathologic grief
* Definition
* Findings
* Definition
* Normal bereavement characterized by shock, denial, guilt, and somatic symptoms.
* Duration varies widely, up to 6–12 months.
* Findings
* May experience simple hallucinations (e.g., hearing name called).
* Pathologic grief includes excessively intense grief; prolonged grief lasting \> 6–12 months; or grief that is delayed, inhibited, or denied.
* May experience depressive symptoms, delusions, and hallucinations.
31
Electroconvulsive therapy
* For...
* Definition
* Adverse effects
* For...
* Treatment option for major depressive disorder refractory to other treatment and for pregnant women with major depressive disorder.
* Also considered when immediate response is necessary (acute suicidality), in depression with psychotic features, and for catatonia.
* Definition
* Produces a relatively painless seizure in an anesthetized patient.
* Adverse effects
* Disorientation, temporary headache, and partial anterograde/retrograde amnesia usually fully resolving in 6 months.
32
Risk factors for suicide completion
* Risk factors
* Gender
* **_SAD_ _PERSONS_ are more likely to complete suicide.**
* _**S**_ex (male)
* **_A_**ge (teenager or elderly)
* **_D_**epression
* **_P_**revious attempt
* **_E_**thanol or drug use
* Loss of **_R_**ational thinking
* **_S_**ickness (medical illness, 3 or more prescription medications)
* **_O_**rganized plan
* **_N_**o spouse (divorced, widowed, or single, especially if childless)
* **_S_**ocial support lacking.
* Gender
* Women try more often
* Men succeed more often.
33
Anxiety disorder
* Inappropriate experience of fear/worry and its physical manifestations (anxiety) when the source of the fear/worry is either not real or insufficient to account for the severity of the symptoms.
* Symptoms interfere with daily functioning.
* Lifetime prevalence of 30% in women and 19% in men.
* Includes panic disorder, phobias, and generalized anxiety disorder.
34
Panic disorder
* Definition
* Treatment
* Diagnosis
* Definition
* Defined by the presence of recurrent panic attacks
* Periods of intense fear and discomfort peaking in 10 minutes with at least 4 of the following) (**_PANICS_**):
* **_P_**alpitations, **_P_**aresthesias
* **_A_**bdominal distress
* **_N_**ausea
* **_I_**ntense fear of dying or losing control, l**_I_**ght-headedness
* **_C_**hest pain, **_C_**hills, **_C_**hoking, dis**_C_**onnectedness
* **_S_**weating, **_S_**haking, **_S_**hortness of breath.
* Symptoms are the systemic manifestations of fear
* Strong genetic component.
* Treatment
* Cognitive behavioral therapy, SSRIs, venlafaxine, benzodiazepines (risk of tolerance, physical dependence).
* Diagnosis requires attack followed by 1 month (or more) of 1 (or more) of the following:
* Persistent concern of additional attacks
* Worrying about consequences of the attack
* Behavioral change related to attacks.