Bullous Pemphigoid Flashcards

1
Q

What age group does it usually occur?

A

elderly patients

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2
Q

Yearly mortality varies from?

A

6% to 40%

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3
Q

what lesions are usually present?

A

pruritic urticarial lesions and tense large blisters

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4
Q

skin pathology

A

subepidermal blisters with eosinophils

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5
Q

DIF shows?

A

Immunoglobulin IgG and C3 at epidermal basement membrane of perilesional skin

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6
Q

Indirect immunofluorescence

A

IgG antibasement membrane autoantibodies in the serum

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7
Q

what are the proteins of the keratinocyte hemidesmosome?

A

the autoantigens BPAg1e and the BP180

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8
Q

what is basal cell basement membrane adhesion structure?

A

hemidesmosome

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9
Q

What is the therapy of bullous pemphigoid?

A

topical and systemic corticosteroids and immunosuppresives

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10
Q

Bullous pemphigoid typically occurs in patients?

A

60 years of age, with a peak incidence in the 70s

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11
Q

there are several reports of bullous pemphigoid in infants and children, although this is rare

A

there are several reports of bullous pemphigoid in infants and children, although this is rare

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12
Q

what are the hallmarks of bullous pemphigoid?

A

1.presence of subepidermal blisters
2.lesional and perilesional polymorphonuclear cell infiltrates in the upper dermis
3.IgG autoantibodies and C3 bound to the dermal epidermal junction

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13
Q

classic form of bullous pemphigoid

A

large, tense blisters arising on normal skin or on an erythematous base

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14
Q

Lesions are most commonly found on?

A
  1. Flexural surfaces
    2.Lower abdomen
  2. Thighs
    although they may occur anywhere
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15
Q

Are the Nikolsky and Asboe-Hansen signs

A

negative

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16
Q

Eroded skin from ruptured blisters usually heals spontaneously without scarring, although MILIA can sometimes occur

A

Eroded skin from ruptured blisters usually heals spontaneously without scarring, although milia can sometimes occur

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17
Q

once the lesions heal they may leave hyperpigmented patches that may last for several months

A

once the lesions heal they may leave hyperpigmented patches that may last for several months

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18
Q

Pruritus may be intense in some patients, but minimal in others

A

Pruritus may be intense in some patients, but minimal in others

19
Q

What other subepidermal blistering diseases also show autoimmune responses to BP180?

A
  1. Pemphigoid gestationis (or herpes gestationis)
    2.cicatricial pemphigoid (or mucous membrane pemphigoid)
    3.linear IgA bullous dermatosis
    4.Lichen planus pemphigoid
20
Q

what are the causes of bullous pemphigoid?

A
  1. most cases occur sporadically without any obvious precipitating factors
    2.trigerred by UV light (either UVB or following PUVA therapy, and radiation therapy)
21
Q

What are the medications associated with the development of bullous pemphigoid?

A
  1. Penicillamine
  2. Efalizumab
    3.Etanercept
    4.Furosemide
22
Q

What are the first manifestation of bullous pemphigoid in almost half of patients?

A

Nonbullous lesions

23
Q

urticarial type lesions precede the more classic tense bullae

A

urticarial type lesions precede the more classic tense bullae

24
Q

the erythematous component in some bullous pemphigoid patients may appear
1. eczematoid
2. serpiginous
3.targetoid with erythema multiforme-like lesions

A

the erythematous component in some bullous pemphigoid patients may appear
1. eczematoid
2.serpiginous
3.targetoid with erythema multiforme-like lesions

25
Q

mucous membrane lesions occur in approximately what percentage of patients?

A

10 percent

26
Q

mucous membrane lesions are almost always limited to what?

A

oral mucous membranes, particularly the buccal mucosa

27
Q

intact oral mucosa blisters are rare, with erosions more commonly seen

A

intact oral mucosa blisters are rare, with erosions more commonly seen

28
Q

the lesions in BP heal without scarring and are fairly limited

A

the lesions in BP heal without scarring and are fairly limited

29
Q

Unlike erythema multiforme, the vermillion border of the lips is rarely involved

A

Unlike erythema multiforme, the vermillion border of the lips is rarely involved

30
Q

there are rare reports of esophageal involvement in BP

A

there are rare reports of esophageal involvement in BP

31
Q

the presence of scarring is more suggestive of what?

A

cicatricial pemphigoid

32
Q

Most cases of bullous pemphigoid occur sporadically?

A

without any obvious precipitating factors

33
Q

bullous pemphigoid appears to be triggered by?

A

ultraviolet light, either UVB or following PUVA therapy and radiation therapy

34
Q

What are the medications associated with the development of bullous pemphigoid?

A
  1. penicillamine
    2.efalizumab
    3.etanercept
    4.furosemid
35
Q

The classic form of bullous pemphigoid is characterized by?

A

large, tense blisters arising on normal skin or on an erythematous base

36
Q

lesions of bullous pemphigoid are most commonly found on what?

A

flexural surfaces, the lower abdomen, and thighs

37
Q

bullae of bullous pemphigoid are typically filled with?

A

serous fluid, but may be hemorrhagic

38
Q

The nikolsky and asboe are positive or negative in bullous pemphigoid?

A

negative

39
Q

eroded skin from ruptured blisters usually heals spontaneously with?

A

WITHOUT SCARRING, although milia can sometimes occur

40
Q

once the lesions heal for bullous pemphigoid?

A

they leave hyperpigmented patches that may last for several months

41
Q

pruritus may be intense in some patients, but minimal in others

A

pruritus may be intense in some patients but may be minimal in others

42
Q

what are the first manifestation of bullous pemphigoid in almost half of patients?

A

nonbullous lesions; urticarial type lesions precede the more classic tense bullae, and patients may present with these lesions early in the course of disease

43
Q

the erythematous component in some bullous pemphigoid patients may appear?

A

eczematoid; serpiginous, or targetoid with erythema multiforme-like lesions