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.
Origin: 1880–85; < Latin recrūdēscere to become raw again, equivalent to re-re- + crūdēscere to grow harsh, worse (crūd(us) bloody (see crude) + -ēscere inchoative suffix)