Because it leaves almost no trace and no symptoms yet can still kill you very quickly and effectively
The Yellow Wallpaper from the Point of View of a Doctor's Wife. "The Yellow Wallpaper" by Charlotte Perkins Gilman, is a story told from the first person point of view of a doctor's wife who has nervous condition. The first person standpoint gives the reader access only to the woman's thoughts, and thus, is limited.
Can you be more specific?
"exuberance" means enthusiasm or showing a lot of energy. if someone holds back a cry of pain, that doesn't really make them seem energetic or excited. from that alone, you can infer that "stoicism" is your answer, but that word relates to a pointed lack of emotion, like when someone doesn't want to lose face or show that they're in pain.