Diagnosis of psychological disorders
The only man I know who behaves sensibly is my tailor; he takes my measurements anew each time he sees me. The rest go on with their old measurements and expect me to fit them. - George Bernard Shaw
Making a formal psychological diagnosis can be a mixed blessing. It has several potential advantages. If many of my symptoms can be accurately grouped under a specific psychological diagnosis, it may well help to understand what is happening, to clarify the likely time course of my symptoms, and to choose treatments that have the best chance of being effective. It's worth noting that often people suffer from more than one psychological disorder at the same time - this is called comorbidity and it is common.