Use a Nulberry if Frostblight is a blight effect in your hunt
Roll repeatedly to reduce buildup if you are still affected
Sheathe your weapon and move to safer ground
Avoid standing in icy or freezing zones
Use heat-related items or effects if available
Cleanse yourself at camp if the hunt allows it
Let the effect expire while staying defensive
Equip resistance gear or skills before the hunt to prevent it next time