Arthus reaction


Ar·​thus reaction ˈär-thəs- How to pronounce Arthus reaction (audio) ȧr-ˈtᵫ̅s- How to pronounce Arthus reaction (audio)
variants also Arthus phenomenon
: a hypersensitivity reaction that occurs several hours to days following the intradermal injection of a vaccine into an animal and is marked by the formation of antigen-antibody complexes accompanied by localized inflammation, pain, redness, and sometimes tissue destruction

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Cite this Entry

“Arthus reaction.” Medical Dictionary, Merriam-Webster, Accessed 13 Jun. 2024.

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