Flaky skin and super quill loss

Hi there

It's been a while since I've posted (but I suppose that's a good thing - his health has been in perfect condition). Unfortunately Watson's skin has been SO dry and flaky recently combined with quills falling out left, right and centre. The funny thing is he doesn't scratch AT all. His quills all have the little ball at the end (I know that is not the be all and end all of him not having mites but it is an indication). His activity still seems pretty much the same. His eating and drinking has dipped a bit but not drastically.
I should also mention that is is summer here and we do have terribly dry summers - even my skin goes a little wacky. But could his lack in eating/drinking and the dry skin/quill loss be down to the dry summer?
He is a grumpy little bugger but he just seems more so lately as well. He isn't quite a year yet (May 16th) so I don't think it's his year quill - unless he is mature for his age.
He's kept on liners and I feed him Royal Canin (the best I can get here).
Also, I don't know if this has anything to with anything but when I handle him these days he makes me all bumpy and super itchy!
Last thing, I have tried the Flaxseed Oil in his food and on his back but it doesn't seem to help.

Any advice or help please!
Thanks - Sarah and Watson