My personal opinion, evidently a minority view these days, is that there's no such thing. The ability to concentrate is like a muscle. If it's weak, the way t

My personal opinion, evidently a minority view these days, is that there's no such thing. The ability to concentrate is like a muscle. If it's weak, the way to strengthen it is exercise. If you went to a gym and found you could only bench-press 20 pounds, would we say you have Muscular Weakness Syndrome and suggest medical treatment? While it's possible your weakness might be caused by some disease, and that should perhaps be looked into, it's also possible that the sole cause is that you don't get much exercise. The way to exercise the concentration muscle is, of course, meditation. This is just my opinion and I could be wrong, but I think it's a possibility that should be kept in mind.