Gryffindor: one breakdown per month. No more, no less, generally alone in their room.

Ravenclaw: lets it build up for ages because "no one's got the time to deal with that" then sets off at the littlest thing.

Hufflepuff: loads stress and ambient negativity leads to a sobbing mess by the end of the week.

Slytherin : *randomly lays on the floor out of the blue* it'stime.