verb (used without object), re·cru·desced, re·cru·desc·ing.
- to break out afresh, as a sore, a disease, or anything else that has been quiescent.
verb
- (intr) (of a disease, trouble, etc) to break out or appear again after a period of dormancy; recur
1875, “break out afresh,” back-formation from recrudescence or else from Latin recrudescere “become raw again, break open afresh.” Related: Recrudesced; recrudescing.