erythrism

from The Collaborative International Dictionary of English v.0.48

Erythrism \E*ryth"rism\, n. [Gr. 'eryqro`s red: cf. F.
   ['e]rythrisme.] (Zo["o]l.)
   A condition of excessive redness. See {Erythrochroism}.
   [1913 Webster]