What the heck?

Dark shadows sneaking in the night.
Oh, what a fright!
Fangs, teeth, claws and
everything I can't bear.
So please share?
I see that single light,
in the darkening night.
It's flame dances in pure delight,
it can defeat the night!
I spot your slender figure,
in the dim moonlight.
Which makes you seem so much bigger.
Come to thee,
for I last not much longer.
The panic sets in,
climbing it's way up to my mind.
Shapes, monsters, everything starts to spin.
Can't breath,
can't see.
What the heck is happening to me?