Default Overheating Issue

the back camera part of my phone gets really hot when the phone is in use. likewise, the top front part of the screen gets hot as well. is this normal? i paranoid that it damages the camera. (my note 3 doesnt take the best pictures, they come out washed out and blurry for a 13 mp camera.) it seem to happen randomly, i dont have to be doing a heavy task for it tonstart heating up.

Gn3