Help Me, And My Ipod Nano

Hello, I have an Ipod nano, and last night, I was charging it at 10:00pm. I woke up at 2:00am and found that my Ipod nano, had red and white lines running across from it as it continues. I can still use the buttons, and play games, but how am I supposed to see what song is playing, or what game is loading?! It is about three years old, and I haven't scratched or dropped it, and I haven't left it in water. This is my first time using it. Now, I don't know what to do! Please help me.