demon sweat 

A nervous, sometimes cold, and fast sweat.

Also possibly one of the best songs ever, written by Ween.

The sky dripped in a demon sweat the night she left
Wrapped up in a blanket and I'm feelin' wet
They said she flew from the goals in her life
Then she wet like blood from a knife
I'm here, and it's all so clear now
The wind flows and it's blowing cold, and I'm still here
Gripping onto what's not around
Now it's all so clear to me now
Now I know, sometimes I try a bit too hard
And I can't let go of you

demon sweat by PTKT July 6, 2006