erythrosis

noun

er·​y·​thro·​sis ˌer-ə-ˈthrō-səs 

plural erythroses -ˌsēz 

1

: a red or purplish color of the skin (as of the face) resulting from vascular congestion (as in polycythemia) : plethora

2

: a hyperplastic condition of tissues that form red blood cells