Arthus reaction
noun
Ar·thus reaction
| \ ˈär-thəs-
, ȧr-ˈtᵫ̅s-
\
, ȧr-ˈtᵫ̅s-
\
variants:
also Arthus phenomenon
Medical Definition of Arthus reaction
: 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