Like most mental health 'disorders', it's often a matter of degree more than some clearly defined difference. That said, it's quite possible that 'we' as a society are becoming less capable of sustained focus and delayed gratification, and our constant mobile phone use, among other things, might play a role in that.

It truly fascinates me how much phones in particular have changed our day to day behavior. I don't know if this is true, but I recall reading that many people check their phone, on average, every five minutes. While I hesitate to call that unhealthy, it's bound to have some kind of noticeable effect.