Because it's based on subjective and imprecise criteria.
I strongly belive in science and I don't find psychology or psychiatry scientific at all.
You have a whole gamut of human personalities and behaviors most often shaped by genetics (by all those thounsands of SNPs, polymorphisms, and mutations) and yet we are trying to pigeon hole them into one of several disorders. When something doesn't fit, you qualify it with comorbidities. Now, while the current classifications are useful for treatments of some or even most conditions, it fails in some others, such as sluggish cognitive tempo (SCT) or Asperger's syndrome, that are not currently oficially recognised (DSM-5) and lumped with ADHD and autism, respectively.
IMHO, the emerging population genetics and advanced in neurobiology will change it all.
Here is my personal problem.
When I take an Asperger's syndrome quiz here: http://psychcentral....zzes/autism.htm
It cames back strongly positive (scored a total of 38, Autism likely).
When I take an ADHD quiz here: http://psychcentral....zes/addquiz.htm
It cames back strongly positive (scored a total of 41, Inattention Subscale: 26, Hyperactivity/Impulsivity Subscale: 15, Adult ADHD).
When I take a bipolar quiz here: http://psychcentral....ipolar-test.cgi
It cames back somewhat positive (Depression score: 24, Mania score: 16, People who have answered similarly to you typically qualify for a diagnosis of Bipolar disorder. However, you wouldn't ordinarily meet the diagnostic criteria for bipolar disorder given the symptoms you've checked off).
When I take a depression quiz here: http://psychcentral....ession-quiz.cgi
It cames back moderately positive (scored a total of 47, Based upon your responses to this depression quiz, you appear to be suffering from a moderate to severe depression).
When I take a SCT quiz here: http://psychcentral....-tempo-quiz.cgi
It cames back strongly positive (scored a total of 29, strong sluggish cognitive tempo).
When I take a Borderline Personality Disorder quiz here: http://psychcentral..../borderline.cgi
It cames back strongly positive (scored a total of 35, severe Borderline Personality Disorder).
At this point I'm bored and I'm not taking them any more (granted I ommitted the ones that were not likely to result positive).
Now, someone will say, I should stop self diagnosis and see a mental health specialist. The thing is I did numerous times in my life and I found out I was given contradictory and useless advice or treatments. Same with my kids. We spent a lot of money for similarlly contradictory and useless advice or treatments.
I rest my case.
Anyone cares to comment?
Edited by jack black, 17 July 2016 - 03:53 PM.