Arthus reaction

noun

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.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/Arthus%20reaction. Accessed 9 Dec. 2022.

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