Tammy Kennon offers a list of new mental disorders brought about by digital technology. It's a fun, apparently tongue in cheek catalog, driven mostly by mobile phones and social media.
One seems actually novel:
Fauxcellarm, phantom ringing, and ringxiety are new to our lexicon, thanks to the universal presence of our buzzing, pinging smartphones. These terms refer to the perception that one's mobile device is ringing (or, more precisely, vibrating) when, in fact, it is not. David Laramie, a clinical psychologist in Los Angeles, studied this phenomenon for his dissertation. Among the 320 adult mobile phone users he polled, two-thirds of them reported experiencing phantom ringing. That is, they "heard" their phone ringing when it actually wasn't.
(thanks to Jesse Walker)