The trepidation
I can feel it coming
Before I know it

Fear and tension
Deadly combined feelings
I start to melt
And there's no return

The anxiety
I can feel it coming
Before it takes me

Shock and confusion
An uncontrolled state
I start to collapse and melt
Is my own self-destruction​

An obscure reference to once sweating through fear and anxiety, and also from just being self-conscious about certain things like myself (and in my case, I feel as if I'm "melting" through it).