In this case, you would trigger the Trauma again, which means you would hit another threshold, which activates the Trauma again and so on until you go completely Insane. Recurring Trauma can be really dangerous if you are at the end of the Sanity Track. This shouldn’t be common though, since it requires a last drawn Mythos card without Summoning Symbol that makes you lose sanity, and you have to be at the very end of the track. Remember to always replace the Mythos card with the last one drawn with no Symbol, even if it wasn’t drawn by the Investigator with Recurring Trauma. Also, the Mythos card next to your Trauma is always shuffled back when the Elder One advances.