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Misnomers in Dermatology: Time to Change Article and Update Review Misnomers in dermatology: Time to change Article and update Manjunath Hulmani, Mohan Kudur Department of Dermatology, ABSTRACT Srinivas Institute of Medical Science and Research Centre, Most of the misnomers encountered in dermatology have arisen from lack of understanding Mukka, Mangalore, India of the underlying etiopathogenesis, histopathology and/or concepts. Some misnomers are due to imprecise translations from word of origin, etymological bungles and/or factual errors. Address for correspondence: Dr. Manjunath Hulmani, It is very important for the residents and practitioners of dermatology to update and change Department of Dermatology, the old misnomers with relevant names to avoid confusion and misunderstanding. In this Srinivasa Institute of Medical article, we have listed all the misnomers in dermatology and suggested the appropriate Science and Research names as indicated. Centre, Mukka, Mangalore - 574 146, Karnataka, India. E-mail: manjunathhulmani@ Key words: Dermatology, misnomers, eponym gmail.com INTRODUCTION or things.[3] We have tried to compile misnomers in dermatology and alternative terms, where possible, The field of dermatology is very rich in descriptive have been suggested. terminologies, but it is very interesting to note that there are lot of misnomers also. Sir William Osler MISNOMERS IN DERMATOLOGICAL INFECTIONS clearly saw the importance of an exact medical lexicon when he wrote, ‘‘Use guidelines for naming diseases. Tinea If our knowledge does not permit to give a name according to the etiology of the disease, the rule should Tinea is a superficial fungal infection of keratinised be to pick the one which seems least objectionable, tissue by dermatophytes. The literal meaning of tinea taking priority and usage into account.’’[1] A misnomer is larva as Romans mistakenly thought the infection to is defined as a word that is used incorrectly or be due to insects.[4] misleadingly.[2] This description is because of frequent use of eponyms and toponyms. An eponym is a person Ringworm (real or fictitious) from whom something is said to take The dermatophytic infection is commonly referred its name. The term eponym is derived from the Greek to as ringworm, particularly by non-dermatologist words epi, meaning upon, and onyma, meaning name. physicians and the lay public, which stems from Thus, eponym means giving a name, while toponym the annular appearance of the lesions. The term is a is the name derived from place (geographic eponym) significant misnomer as no worms are associated with Access this article online this condition.[5] Quick Response Code: Website: www.ijdvl.com Athlete’s foot DOI: It is a misnomer as it does not refer to the physical 10.4103/0378-6323.113075 condition of the foot specific to athletes. It is merely PMID: a popular name given to the pedal fungal infection ***** caused by dermatophytes.[5] How to cite this article: Hulmani M, Kudur M. Misnomers in dermatology: Time to change and update. Indian J Dermatol Venereol Leprol 2013;79:479-91. Received: July, 2012. Accepted: September, 2012. Source of Support: Nil. Conflict of Interest: None declared. Indian Journal of Dermatology, Venereology, and Leprology | July-August 2013 | Vol 79 | Issue 4 479 Hulmani and Kudur Misnomers in dermatology Moniliasis Trichomycosis The term monilias is used as a synonym for candidiasis, It is characterized by concretions along the hair and it is a misnomer as moniliasis refers to a stage shafts [Figure 1] that contain the bacterial colonies of of ascomycetes and has no relationship to the genus Corynebacterium tenuis, easily recognized in gram- Candida.[5] stained preparations.[10] The term “trichomycosis” is a misnomer and may now better be called as Tinea versicolor trichobacteriosis.[11] The term tinea is used for dermatophytic infections. The causative organism for tinea versicolor, Malassezia Rocky mountain spotted fever (RMSF) furfur or M. globosa, is not a dermatophyte, so to call it The term is a misnomer as the condition is relatively as tinea versicolor is a misnomer. Pityriasis versicolor rare in the Rocky Mountain States. First noted in is an appropriate terminology for this condition.[5] the mountains of Montana, RMSF is found most commonly in the Southeast and Central regions of the Chicken pox United States. The greatest numbers of incident cases Chicken pox, also known by its Latin name of varicella, is a misnomer. The disease was named after the French are reported in North Carolina, Oklahoma, Arkansas, [12] term “chichiepois” – which means “chickpea” – from Missouri, Montana, South Dakota and Wyoming. a supposed similarity in size of the seed to the lesions. “Chichiepois” eventually became “chicken pox.”[6] Pubic lice Crab lice or Phthirus pubis is also known as pubic lice, Kaposi sarcoma which is a misnomer. While the organism is typically Kaposi sarcoma is an infection caused by human found in the pubic area, it may affect any part of the herpesvirus-8 (HHV 8) in immunocompromised body with secondary hair, including the eyelashes and individuals. Cells infected with HHV 8 produce eyebrows of children.[5] cytokines, chemokines and growth factors, which cause proliferation of endothelial and spindle cells. There is MISNOMERS IN TUMORS AND CYSTS controversy as to whether these proliferative cells truly represent a malignant neoplasia versus an inflammatory Sebaceous cyst hyperplasia. Therefore, the term sarcoma used in the Sebaceous cyst is a misnomer for epidermal or description of this condition may not be warranted.[7] epidermoid cysts. These keratin-containing cysts lined by epidermis are not of sebaceous origin.[13] Botryomycosis Botryomycosis is a chronic granulomatous reaction Nevus comedonicus to bacterial infection. In 1884, Revolta named it It is a benign hamartoma of the pilosebaceous unit, botryomycosis under the impression that it was and is a misnomer as typical comedones are not caused by a fungus. The word “botryo” is derived from present. The term follicular keratotic nevus has been the Greek term “Botrys,” meaning “a bunch of grapes.” proposed.[14] The word mycosis is a misnomer as it is caused by true bacteria and not by fungus. It is also known as Seborrheic keratosis actinophytosis, bacterial pseudomycosis and granular Seborrheic keratoses result from a proliferation of bacteriosis.[8] keratinocytes and are not related to sebaceous glands. Therefore, these keratoses should not be termed Malignant pustule of anthrax [15] Although the primary lesion of anthrax has been seborrheic. called a malignant pustule, the term is a misnomer. The lesion is neither malignant nor purulent, and Leser–Trelat sign pustules, if present, represent secondary infection due The eponym has been wrongly credited to two to streptococci or staphylococci.[5] European surgeons, Edmund Leser and Ulysse Trelat. While they apparently observed cherry angiomatosis Pemphigus neonatorum in patients with cancer, it was Hollander who first It is severe bullous impetigo of the newborn and has linked internal cancer with seborrheic-keratoses nothing to do with pemphigus.[9] [Figure 2] in 1900.[5,16] 480 Indian Journal of Dermatology, Venereology, and Leprology | July-August 2013 | Vol 79 | Issue 4 Hulmani and Kudur Misnomers in dermatology Eruptive syringoma observed. Renaming the lesion “solitary circumscribed Eruptive syringoma may represent a hyperplastic neuroma” has been proposed.[22] response of the eccrine duct to an inflammatory reaction rather than a true adnexal neoplasm. The Actinic keratosis (AK) term “syringomatous dermatitis” has been proposed The term AK is a misnomer as it fails to reflect the for such cases.[17] malignant nature of this lesion. From the cytological and from the molecular biological point of view, Trichoadenoma (trichoadenoma of Nikolowski) AKs demonstrate features of malignancy from their The term trichoadenoma is a misnomer as there are inception. Both AK and invasive squamous cell no adenomas of strictly follicular lineage; the hair carcinoma (SCC) contain atypical keratinocytes with follicle is not a structure that exhibits glandular loss of polarity, nuclear pleomorphism, disordered differentiation.[18] maturation and increased number of mitotic figures.[23] Unfortunately, this questionable misnomer “actinic Adult colloid milium keratosis” has become ingrained in our medical These are asymptomatic, shiny, smooth, firm papules literature and, till now, attempts to rename this 1–10 mm in diameter, involving chronically sun- lesion to accurately reflect its biologic behavior have damaged skin of adults. Microscopically, the papules failed. But, regardless of what it is called, AK (actinic show severe elastosis involving most of the papillary keratosis) must be clearly recognized as what it is – dermis. This is a distinct clinical form of severe solar incipient SCC.[24] elastosis, and the term papular-elastosis has been suggested.[19] Fibroepithelioma of Pinkus (FEP) FEP was first described as pre-malignant fibroepithelial Myxoid cyst tumor of the skin by Herman Pinkus in 1953.[25] Digital myxoid cysts occur over the distal phalanx Although FEP is currently accepted as a variant of of the finger [Figure 3] or rarely the toe, appearing basal cell carcinoma (BCC), its classification still as solitary, shiny, tense, opalescent papules. There remains controversial. FEP may also be categorized are currently two variations of these cysts. The first as a variant of trichoblastoma, a benign counterpart of arises in the proximal nail fold and is a form of focal
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