"Bullneck" appearance is a characteristic feature seen in: (A) Epidermolysis bullosa, (B) Severe Diphtheria, (C) Epidemic Parotiditis, (D) Acute Epiglottitis
Answer is B. Regional lymphadenopathy in diphtheria causes a brawny thickening /swelling all around the neck, giving a 'bull neck" appearance Ref : Park 23rd edition Pgno : 161