Q:

Can a user be hurt by his own chakra? 

In the Naruto world, is it possible to get hurt directly by your own chakra?  For example, Naruto's rasengan is a manifestation of his chakra, so is Sasuke's chidori and Itachi's fire style jutsus.  If Naruto were to accidentally hit himself with his own rasengan, would it affect him the same way it would if he used it on someone else?  Because it's his own chakra, would his body just absorb it?  Same goes for Sasuke's lightning blade and first style jutsus.  If Itachi blew a fireball into the wind and it came back and hit him, would he be hurt by it? 

A:

In the Fourth Shinobi War, we discover that you can get hurt by your own chakra. 
The best example is Naruto versus the Third Raikage.