Diagnosis is a hot topic among psychotherapists. For those new to the debate, this might seem like a surprise. After all, diagnosis isn't particularly controversial in medicine--when you're sick and visit your doctor, you expect him or her to tell you what's wrong, i.e. diagnose the problem as an essential part of treating it. And while the word diagnosis might not be used, it's a quite ordinary part of our day-to-day experiences with plumbers, computer technicians, and auto-mechanics. If our doctor or plumber can't tell us what's wrong, we feel we haven't been helped (and often we'll be referred to an expensive specialist with the expectation that he or she will be able to get the right diagnosis).
Many people assume the same goes for psychotherapy. For one thing, of all the professions mentioned above, it is psychiatric diagnoses that are by far the most prevalent in everyday discourse. Even if you're not familiar with the DSM-V, you're almost surely familiar with some of its contents. Concepts like anxiety, mania, depression, PTSD, and addiction are all terms that reference diagnoses outlined in this manual used by psychiatrists, psychologists, and psychotherapists. Diagnostic concepts from plumbing or ophthalmology haven't exactly worked their way into everyday conversation in the way these terms from the DSM-V have.
And so it may come as a surprise to learn that there are a growing number of psychotherapists who don't diagnose, and who advocate a movement away from (or at least to dramatically reorganize our relationship with) mental health diagnosis.