Bullous Pemphigoid Flashcards
What age group does it usually occur?
elderly patients
Yearly mortality varies from?
6% to 40%
what lesions are usually present?
pruritic urticarial lesions and tense large blisters
skin pathology
subepidermal blisters with eosinophils
DIF shows?
Immunoglobulin IgG and C3 at epidermal basement membrane of perilesional skin
Indirect immunofluorescence
IgG antibasement membrane autoantibodies in the serum
what are the proteins of the keratinocyte hemidesmosome?
the autoantigens BPAg1e and the BP180
what is basal cell basement membrane adhesion structure?
hemidesmosome
What is the therapy of bullous pemphigoid?
topical and systemic corticosteroids and immunosuppresives
Bullous pemphigoid typically occurs in patients?
60 years of age, with a peak incidence in the 70s
there are several reports of bullous pemphigoid in infants and children, although this is rare
there are several reports of bullous pemphigoid in infants and children, although this is rare
what are the hallmarks of bullous pemphigoid?
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
classic form of bullous pemphigoid
large, tense blisters arising on normal skin or on an erythematous base
Lesions are most commonly found on?
- Flexural surfaces
2.Lower abdomen - Thighs
although they may occur anywhere
Are the Nikolsky and Asboe-Hansen signs
negative
Eroded skin from ruptured blisters usually heals spontaneously without scarring, although MILIA can sometimes occur
Eroded skin from ruptured blisters usually heals spontaneously without scarring, although milia can sometimes occur
once the lesions heal they may leave hyperpigmented patches that may last for several months
once the lesions heal they may leave hyperpigmented patches that may last for several months