Doctors are actually very careful not to be overzealous in diagnosis. To meet the criteria for a real diagnosis, the symptoms must be "excessive, long-term, and

Doctors are actually very careful not to be overzealous in diagnosis. To meet the criteria for a real diagnosis, the symptoms must be "excessive, long-term, and pervasive". Similarly, not everyone with "blues" is clinically depressed, and not everyone with unexplained weight loss has cancer... the folk estimates of the prevalence of these conditions are way overblown.