Misnomers in Dermatology and Other Medical Specialties-How to Deal with Science Fiction?

Background/Objectives: A "misnomer" is a term that is erroneous or inaccurate. Dermatology is replete with well-established misnomers such as "Mycosis fungoides", "keratoacanthoma", "actinomycosis", "granuloma pyogenicum", or "Kaposi sarcoma". Misnomers have originated from misconceptions or mistranslations that were passed down historically, and reflect the comparative-descriptive origin of terminology. We aimed to collect and categorize (non-)dermatological misnomers and to assess strategies for abandoning them. Methods: A questionnaire-based survey with 411 senior academic physicians of five university hospitals in Switzerland was conducted to evaluate the frequency of misnomers across dermatology and other specialties. In addition, a systematic review was conducted, complemented by manual searches to collect medical misnomers. Results: The survey and systematic review yielded 536 non-dermatological and 168 dermatological misnomers, pointing to a particular abundance of misnomers in dermatology, which could be categorized into seven categories. A wrong pathological concept was the most common origin of misnomers. Amongst dermatologists, 60.0% regarded misnomers as a relevant problem in their specialty compared to only 35.5% of non-dermatologists. Preferred strategies for abandoning misnomers were avoidance, consensus definitions, and information in teaching. Conclusions: Our results show that misnomers are particularly abundant in dermatology, indicating the need to modernize terminology.