Radiation overdose - Melting flesh
Life is draining from you - Toxic death

Rotting from the inside out - Flesh turns grey
Inhaling radiation fumes - Lungs decay
[ Lyrics from: http://www.lyricsfreak.com/r/repulsion/radiation+sickness_20304214.html ]
Sickness from the radiation makes you lose your mind
Hair falls out, internal bleeding
Virus makes you blind

Radiation burns your flesh - Soon you'll die
Poisoned clouds of toxic rain in the sky

Start to fucking decompose, still alive
Rigor Mortis freezes you, now you die