Clinical and experimental dermatology · 2021
Clinical clues and trends in epidemiology and pathogens in paediatric tinea capitis: a retrospective cohort study.
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Friedland R, Reiss-Huss S, Sabbah F, Ben Amitai D
Аннотация
BACKGROUND: Tinea capitis is the most common dermatophyte infection in children. Pathogens differ between populations. During the past few decades pathogen shifts have been reported in many countries around the world. This study aimed to characterize the pathogens involved in tinea capitis in a large tertiary paediatric medical centre in Israel.
METHODS: The electronic medical records of the dermatology unit were searched for patients diagnosed with tinea capitis from 2010 to 2019, and demographic, clinical and mycological data were retrieved. A stepwise logistic regression was performed to determine the variables most significantly associated with positive cultures.
RESULTS: The prevalence of Trichophyton tonsurans isolates was found to be significantly increased during 2019. In the logistic regression analysis, alopecia was most significantly associated with a positive culture (OR = 8.72, 95% CI 4.29-17.7, P < 0.001) while positive culture was also associated with age (OR = 1.11 per year of age, 95% CI 1.02-1.22, P = 0.01) and Ethiopian ethnicity (OR = 3.67, 95% CI 1.42-9.45, P = 0.01). The presentation of alopecia was significantly related to having a positive culture. This symptom was more prevalent in boys than in girls, and the diagnosis of tinea capitis was delayed by an average of 2 months in girls.
CONCLUSION: The results of this study may herald a pathogen shift in Israel. Physicians should be aware that rates of alopecia are lower in girls and this can result in delayed diagnosis and the development of complications, including chronicity, scarring alopecia and kerion formation.
METHODS: The electronic medical records of the dermatology unit were searched for patients diagnosed with tinea capitis from 2010 to 2019, and demographic, clinical and mycological data were retrieved. A stepwise logistic regression was performed to determine the variables most significantly associated with positive cultures.
RESULTS: The prevalence of Trichophyton tonsurans isolates was found to be significantly increased during 2019. In the logistic regression analysis, alopecia was most significantly associated with a positive culture (OR = 8.72, 95% CI 4.29-17.7, P < 0.001) while positive culture was also associated with age (OR = 1.11 per year of age, 95% CI 1.02-1.22, P = 0.01) and Ethiopian ethnicity (OR = 3.67, 95% CI 1.42-9.45, P = 0.01). The presentation of alopecia was significantly related to having a positive culture. This symptom was more prevalent in boys than in girls, and the diagnosis of tinea capitis was delayed by an average of 2 months in girls.
CONCLUSION: The results of this study may herald a pathogen shift in Israel. Physicians should be aware that rates of alopecia are lower in girls and this can result in delayed diagnosis and the development of complications, including chronicity, scarring alopecia and kerion formation.