Spotty white patches on palms of hands? (PIC)?

I am 13. My hands have these sort of spotty white patches and feel sort of rough. They haven't been there forever, but have been for a while. I'm kind of worried. Please help.

Left- http://i45.tinypic.com/2h55f12.jpg
Right- http://i50.tinypic.com/2572m42.jpg

Sorry the pictures aren't too good taken with a phone
 
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