Pain manifests itself in many ways.
Sometimes it's a wave:
it ebbs and it grows.
Sometimes it's a dose
of poison, sinking slowly, unnoticed, into your blood.
Sometimes it's a gargantuan marsh of slush and mud
that you wallow endlessly through; a viscous mire.
Sometimes it's a violent explosion of raging fire,
an all-consuming inferno centered on you.
In any case, the worst you can ever do
with your pain is to leave it unchecked and let it fester
rather than making amends and laying your pain to rest.