0071598626.pdf

Environmental

Exposures

Questions

420.A 58-year-old man presents to the emergency department (ED) with
reported blister formation over both feet that initially began 2 days ago. He
denies any past medical history, medications, or allergies. His social history is
significant for alcohol dependence and recently becoming undomiciled. He
denies any sick contacts or recent travel. Upon physical examination, these
lesions are fluid-filled and his feet are grossly cyanotic and tender to the touch.
His foot is shown below. What is the most likely diagnosis in this patient?

461

a. Chilblains
b. Frostbite
c. Trench foot
d. Thermal burn
e. Herpes

(Reproduced, with permission, from Knoop KJ, Stack LB, Storrow AB.Atlas of Emergency
Medicine. New York, NY: McGraw-Hill, 2002: 517.)