confluent smallpox

con·flu·ent small·pox

a severe form in which the lesions run into each other, forming large suppurating areas.

confluent smallpox

An obsolete term for a permutation of smallpox (eradicated in 1977) characterised by confluent suppurative lesions and an often rapid clinical deterioration.
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But just when he was poised to see his surgical career fully blossom, he died at the age of 34 from the hideous disease of confluent smallpox.
Others developed confluent smallpox, a condition with a 60 percent mortality rate in which the pustules ran into each other and sloughed off in great rotten sheets of skin.