Can the touchscreen on a Nintendo DS Lite get worn out

As with any kind of electronic appliance, with excessive usage a component or components can get worn out, and this would be especially prevalent in an input device such as a keyboard, mouse, or in the case of a DS Lite, the touch screen. So yes, The screen CAN get worn out.
ANSWER TO NITENDO DS LITES TOUCH SCREENyes a Nintendo DS Lites touch screen can get worn out i work at best buy and i have seen it a lot. because when you constently use the touch screen the sensore will eventually ware down and will not longer respong to contact and just so you know the manufacturs warrenty will not cover that.
If you use your stylus instead of your finger, it willlasta lot longer.Also try not to push too hard.That's not good for it either.