[gr8fl4porsche]

I feel your pain. I am no stranger to Vicodin either.

You need an MRI as mentioned above. You have to find out what is pressing on the nerve. I have 2 bulging discs causing my pain. My Chiro along with an exercise routine finally helped me.
I know the searing pain you are describing. 6-7 years of it.

This is what worked for me the last time it got real bad.

Constant supply of Vicodin - this is not the time to be a hero.
Chiro did his adjustments and put me on the 'rack'. It's a table you lay down on, straps hold down your waist and you hold onto bars over your head. Then a big roller presses upwards stretching your vertebra. The theory is to stretch the discs so they retract a little relieving pressure on the nerve.

Combine the above with weight loss, back stretching and strengthening.

Eventually I felt better.