The concept of disorder, by the very definition puts those behaviors described into the the bottom 1-2 percentile at best. SO the DSM, who's writers have based everything they conceptualize on statistics, world-wide, do not call disorder the things that are common. What is the recognized prevalence rate for BPD? This was a very broad-stroke explanation. In reality most disroders need to exhibit significant deviation from a standard population at the rate of p<.01, or also known as less than 99.9% of the average population.