there is nothing you can do about that; leaving the area is the best choice you can make in such moments.
you are able to improve your tolerance, over time, by regularly going to situations you know cause overstimulation, as long as you keep a quick exit available, and stay there untill just before your limit.
if you do that often enough, you will find your limit being further away every time, just as you find with other trainings (strength, speed, endurance...)