I like this. I think it was a bit confusing the first time I read it, but after reading it a couple times more I finally understood what it meant.
I think for the fourth line, you should change it to this,
The taste of poison on my tongue.
I didn't really care for the words "poison-like"
Anyways, this is jus my opinion.
The tips of my fingers
Start to bleed the thoughts
That overwhelm me