Pathology · single question
Which disease may clinically resemble or coexist with pemphigus vulgaris?
Show answer and explanation
Correct answer: B. Mucous membrane pemphigoid
- A. Listing 'pemphigus' as a separate look-alike to pemphigus vulgaris is circular.
- B. Correct (keyed). Mucous membrane (cicatricial) pemphigoid is the classic vesiculobullous mimic — overlapping desquamative gingivitis/oral erosions, distinguished by DIF.
- C. Erosive lichen planus can also mimic it; a defensible alternative, but the keyed answer is pemphigoid.
- D. Ulcerative stomatitis is non-specific.
Note: Erosive lichen planus is also a reasonable mimic; the keyed answer here is mucous membrane pemphigoid.