When psychology started, it catalogued every human behavior it came across. These categories of psychology weren’t illnesses, not yet. Psychologists simply described what they came accross when studying the human psyche. These neutral categories then all became normative disorders and diagnoses at the arrival of psychiatry and the mental health industry.
Psychiatrists, by turning the categories of psychology into illnesses, made sure that they could treat anyone and everyone for nearly anything. The whole of the human psyche now being divided into psychiatric illnesses, being alive guarantees you have a psychiatric condition. Only being in a coma could make you immune to the power of psychiatrists.
The next step was inventing a treatment for each of these illnesses. Since all psychology’s categories were now illnesses, the goal became to erradicate them in clinical settings, and not study them objectively. But since the illnesses of psychiatry are in fact mere descriptive categories of psychology from back when it was still a science, the treatment is not a cure! It’s a reprogramming, a brain-washing, a psychological torture to make you fit a mold. Every remedy psychiatry has is a form of torture where you learn to disensitize yourself to lacking of something or resisting an urge.
The conversion of psychology from a descriptive science to a normative medical field with the rise of mental health is why when you start self-diagnosing, you end up diagnosing yourself with so many “disorders”. You self-discover you have pretty much everything until you are scolded for having self-diagnosed because that is a very bad thing when it’s the psychiatrist calling the shots and you, for some reason, can’t be neutral in observing your own psyche.
Having all (or at least most) of the diagnoses is perfectly normal. It’s like saying “I have a nose, a mouth, two nipples, etc.” and not saying that all these things are broken in you! Most of us have most of the “diagnoses” in the DSM, indeed. Psychiatrists will pick and choose amongst all the diagnoses the one that suit their agenda better, depending on which type of torture they want to inflict you.