>>21023468>Should I be diagnosed with overheightism since I am taller than average?That is actually a very smart question! And one that neurologists specifically ask in order to prove their points!
On a bell curve for height (analagous to personality traits) the extreme ends are identified as abnormally short or abnormally tall. The range of normal height varies by ethnicity, so abnormal is always relative to that. But say you have a man who, for his ethnicity, is extremely tall, like 7 feet.
There are a number of possible causes for his abnormal height (or abnormal behavior in the case of personality traits). Their tallness may be a sign of underlying pathology. They could have a major disease such as acromegaly, or a minor genetic aberration such as XYY.
They might also be completely free of pathology and simply be unfortunately tall. Their tallness may cause them lifestyle issues such as back problems or being unable to drive tiny cars which they love.
The same could be said for apparent personality traits. Let's use neuroticism as an example. It might be caused entirely by a major brain disease such as melancholic depression. It might be caused by a more minor longstanding condition such as testosterone deficiency. It might be caused by no pathological process at all. In the latter case it may lead to lifestyle problems such as anxiety disorder or social isolation.
That nonpathologic neuroticism might be called a personality disorder because it can lead to those troublesome secondary conditions. But you're correct, there's really nothing "wrong" with them other than the fact that they are statistically different.