Answer: flareup

AnswerCrossword Clue
FLAREUP

Sudden outburst

FLAREUP

Outburst

FLAREUP

Outbreak

FLAREUP
Sudden outburst.
FLAREUP
Outbreak.
FLAREUPSudden outbreak
FLAREUPErupt
FLAREUPRecurrence of an old problem
FLAREUPErupt suddenly