When are insanity cards used, and where do the mental injury stickers go?

Question

Accepted Answer

Insanity cards come into play when a character goes insane during the campaign, and sometimes as an event result; they are then shuffled into the deck. Both green sanity stickers go on a single exploration wound die, not one on each of two dice.

Robinson Crusoe: Adventures on the Cursed Island

When are insanity cards used, and where do the mental injury stickers go?