Cutaneous anthrax usually begins as a small, raised bump that might
itch. Within 1 to 2 days, the bump develops into a painless, fluid-filled
blister about 1 cm (0.4 in.) to
3 cm (1.2 in.) in diameter.
Within 7 to 10 days, the blister has a black center of dying tissue—called an
eschar—surrounded by redness and swelling.
Primary Medical Reviewer
E. Gregory Thompson, MD - Internal Medicine
Specialist Medical Reviewer
W. David Colby IV, MSc, MD, FRCPC - Infectious Disease
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