Learn how to say Recrudescence correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word recrudesce:
[no object] formal
break out again; recur:
syphilis, until recently thought to be almost under control, is now recrudescing
late 19th century: back-formation from recrudescence ‘recurrence’, from Latin recrudescere ‘become raw again’, from re- ‘again’ + crudus ‘raw’