Question
A middle-aged lady presented to the OPD with painful blisters on the skin and oral mucosa. Direct immuno fluorescence was done as shown below. All the following are true about the disease pathogenesis except?
A. Due to IgG against Desmoglein-1
B. Intercellular deposits of IgG and C3
C. Due to IgG against hemidesmosomes
D. Due to IgG against Desmoglein-3
Show Answer
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Correct Answer » C
Explanation
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Answer- C. Due to IgG against hemidesmosomes
- skin as well as mucosal involvement in this patient, along with Fishnet pattern seen in DIF points towards a diagnosis of
- Pemphigas vulgaris. Pemphigus vulgaris is caused by IgG antibodies against Desmoglein I and 3, and there is intercellalar
- IgG and complement deposition inftshnet pattern IgG against hemidesmosomes and deposition in the basal layer is seen in Bullous pemphigoid.
