Why does my Samsung Galaxy Prime click on random things?

I have a galaxy core prime and it tends to hlitch a lot and click on random things. If I turn off the screen for a few seconds and turn it back on it will be fine but then does the same thing in a matter of moments. Any suggestions? 

Hi Clara. That sounds like ghost touch. Can you plug in your phone to a different charger (not the one you are using usually) and check if the random touches on the screen is removed.

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