Let It In

It starts with an itch and a tingle
Then it builds and expands
And suddenly all at once my legs won't let me stand

I scratch 'till my fingers go numb
But my skin never bleeds
A silent accomplice waits and feeds when I'm asleep

There's something that lives inside me
I promise I never let it in
It grows and divides inside me
It's making a home beneath my skin

The seeds have been buried deeply
The roots are in place
It's crowding the Sun and it's darkened my days

I've taken it all for granted
But now it's too late
There's nothing that's left to do but wait