Who am I?

I looked in the mirror and saw someone who wasn't me,

My eyes are tired from the countless sleepless nights
My lips are dried from the words I dare not speak
My face is pale from this cage that blocks me from the sun 
 
I looked in the mirror and saw someone who wasn't me,
My wrists are red from the blood that now stains them
My back is purple from the monster that I call my dad 
My stomach growling from the monster that's clawing it's way out
 
I looked in the mirror and saw someone who wasn't me,
My arms are thinning from the meals I'm denied 
My legs keep falling from the gap that separates them
 
I looked in the mirror and saw someone who wasn't me 
My heart is breaking from the mom I'll never have
My lungs are gasping from the smoke that fills them
My veins are cold from the blood that fills them
 
Who am I?