deflorescence

noun
de·​flo·​res·​cence | \ ˌdef-lə-ˈres-ᵊn(t)s; ˌdē-ˌflōr-ˈes- How to pronounce deflorescence (audio) , -ˌflȯr- How to pronounce deflorescence (audio) \

Medical Definition of deflorescence

: the fading or disappearance of the eruption in an exanthematous disease