If you have been given various diagnoses from many different doctors, did it harm you?

I hear of people who go to many doctors in a desperate search for a diagnosis. They may receive various “educated guesses” by each doctor , none of them agreeing. If this is the case, what does that tell us about the medical establishment? Of course, there are many people who are given an accurate diagnosis with the first doctor but they are not the subject of the question. Have you been mis-diagnosed and how did that harm you, if at all?