All 5 Uses

hysteria
in
Before I Fall
(Auto-generated)

I know I sound hysterical, but I can't help it.†
p. 72.2

hysterical = exceedingly funny (resulting in uncontrollable laughter); or exhibiting excessive, uncontrollable emotion
Elody tries to laugh, but the sound comes out high-pitched and hysterical.†
p. 193.6
It's so dark it's almost heavy-looking, and I get a sudden hysterical fear that we're stuck in a box.†
p. 258.8
She's so hysterical her words swell together, transforming into an animal howl.†
p. 326.7
Her voice breaks a little, a note of hysteria creeping in.†
p. 408.7 *

Definitions:

(1) (hysteria)
a state of excessive, uncontrollable emotion

In addition to being the adjective form of hysteria, the form hysterical can also indicate that something is exceedingly funny (leading to uncontrollable laughter)
(2) (meaning too rare to warrant focus)