Having burned oneself very badly, an anxious case (6,2,6)

I believe the answer is:

bundle of nerves

'anxious case' is the definition.
(someone anxious might be called a bundle of nerves)

I don't understand the rest of the clue.

(Another definition for bundle of nerves that I've seen is " Wreck".)

I've seen this clue in The Times.

Want a hint initially instead of a full solution? Install my app