Cancer

I am a six letter word.
I can make you very sick.
I can make you hurt and ache.
You dont want to feel this way.
But I keep spreading,
multiplying.
I take over your body.
They try to get rid of me,
but it's a long, ugly battle.
Surgeries.
Scars.
Weakness.
Nausea.
Even when you think I'm gone,
I can be lurking in the shadows,
waiting to come out again.
I am cancer.