The pain that no one knows

It's a force: you'll never like it
It's a theme that no one knows
It's a force you'll never break it
Heaven knows why it comes again
I smash my head against the wall
Dark moments, go go!
I got a pain, and no one knows
It's so wicked in every way
Neuralgia no chance to hide
The doctor says it never fades
It is sleepless and weakness
I feel it now: It's coming now again