Chapter 100- Delusional, Obsessive-Compulsive And Factitious Skin diseases Flashcards

1
Q

Primary skin diseases that can be exacerbated or precipitated by psychosocial stress

A

Psychophysiologic skin disorders

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2
Q

Underlying psychiatric component that causes self-induced physical findings on the skin

A

Primary psychiatric skin disorders

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3
Q

Type of monosymptomatic hypochondriacal psychosis characterized by a fixed, false belief that one is infested with living organisms or inanimate materials in the absence of objective proof

A

Delusions of parasitosis/infestation

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4
Q

Variant of delusions of parasitosis characterized by fixed belief that there are fibers or solid material extruding from the skin

A

Morgellons disease

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5
Q

Specimes brought in various containers are referred to as

A

Matchbox sign, Ziploc sign, specimen sign

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6
Q

Biopsy is likely to be diagnostic for delusions of parasitosis.
True or False

A

False, nondiagnostic

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7
Q

Patients with shorter duration of active delusion have an increased probability of achieving remission following treatment.
True or False

A

True

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8
Q

Most studied pharmacologic agent for the treatment of delusions of parasitosis.

A

Pimozide (Orap)

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9
Q

Adverse effects of Pimozide (Orap)

A
Extrapyramidal symptoms (Akathisia)
Pseudoparkinsonism symptoms
QT prolongation
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10
Q

Treatment for extrapyramidal symptoms of Pimozide

A

Diphenhydramine (Benadryl)

Benztropine (Congentin)

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11
Q

Most studied atypical antipsychotic agent for delusions of parasitosis

A

Risperidone (Risperdal)

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12
Q

Adverse effects of Risperidone

A

Galactorrhea

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13
Q

Adverse effects of Olanzapine

A

Weight gain

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14
Q

Adverse effects of Aripiprazole

A

Akathisia or agitation

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15
Q

Somatoform disorder characterized by preoccupation with an imagined defect with excess time spent attempting to conceal or fix the defect

A

Body dysmorphic disorder

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16
Q

Treatment of choice for body dysmorphic disorder

A

High dose SSRIs

Cognitive behavioral therapy

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17
Q

BDD can appear as early as __, M __F

A

16 years old,

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18
Q

Commonly involved focus of BDD

19
Q

Hair pulling disorder results in patchy, scarring alopecia.

True or False

A

False, nonscarring

20
Q

The most important treatment for hair pulling disorder is

A

Habit reversal training

21
Q

Most common sites for hair pulling disorder

A

Scalp, eyebrows, eyelashes

22
Q

Disorder where patient eats the hair root (___) or whole hair is eaten (___) and may develop GI hairballs (___)

A

Trichorhizophagia

Trichophagia

Trichobezoars

23
Q

Most common comorbidity (40%) in hair pulling disorder

A

Depression

24
Q

Dermoscopy signs of hair pulling disorder

A

V sign
Flame hairs
Hair powder
Coiled hair

25
2 or more hairs emerge from 1 follicular unit and are broken at the same length
V sign
26
Semitransparent, wavy, cone-shaped hair residues
Flame hairs
27
Sprinkled hair residue
Hair powder
28
Histologically, hair pulling disorder presents as (5)
``` Increased no. of catagen hairs Traumatized hair bulbs Empty follicles Follicular keratin debris Melanin pigment casts ```
29
4 key aspects of habit reversal therapy
1. Awareness 2. Competing response training 3. Social support or contingency managment 4. Stimulus control
30
Most studied medication for hair pulling which reduces the frequency of hair pulling urges
Clomipramine
31
Disorder characterized by self induced cutaneous lesions resulting fron uncontrollable impulse to excessively pick, rub, or scratch normal skin or skin with minir surface irregularities
Neurotic/ Psychogenic excoriations
32
Age of onset of neurotic excoriations
15 to 45 years old
33
Characteristic areas of sparing in unreachable areas of interscapular area may be present in neurotic excoriations
Classic butterfly sign
34
Psychiatric comorbidities observed with neurotic excoriations
Mood and anxiety disorders
35
Useful for neurotic excoriations for its dual antipruritic and antianxiety effects
Doxepin
36
ADE for doxepin
Cardiac arrhythmia
37
Nail biting (___) and nail picking (___)
Onychophagia | Onychotillomania
38
Psychodermatologic skin disorder characterized by self influcted injury to skin, hair, or nails using sharp instruments is called
Dermatitis artefacta/ factitial dermatitis
39
Comorbidities of dermatitis artefacta
Generalized anxiety Major depression Borderline personality disorder
40
Conscious motivation of secondary gain
Malingering
41
Dopaminergic dysfunction contributes to self injurious behavior hence antipsychotic meds such as (2) shows benefit in dermatitis artefacta
Pimozide | Risperidone
42
For patients with dermatitis artefacta and depression, ___ may be beneficial
High dose SSRIs
43
Patients with more severe presentations or comorbid borderline personality disorder could benefit from __
Psychotherapy