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EVALUATION OF DERMOSCOPY IN DIAGNOSIS OF TINEA CAPITIS
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Abstract
Objectives: To investigate the sensitivity, specificity, positive diagnostic value, and negative diagnostic value of dermoscopy on patients with tinea capitis at the National Hospital of Dermatology from January 2020 to May 2020. Subjects and methods: 53 patients with clinical diagnosis of tinea capitis were carried out by two methods: dermocopy and culture. From there, calculate the sensitivity and specificity of dermoscopy compared with the culture (gold standard). Results: The diagnostic value of tinea capitis by dermocopy is sensitivity 95.1%, specificity 33.3%, positive predictive value 83%, negative predictive value 66.7%. The “zigzag” sign was more common in the tinea capitis group (65.9%) than in the non-fungal group. The combination of signs of skin scales + comma / zigzag / shape between the scalp fungus group and the non-fungal infection had a statistically significant difference with p <0.05. “White sheaths” sign is helpful to diagnosis Trichophyton and Microsporum infections. Conclusion: Dermoscopy can be used as an useful tool in the diagnosis of tinea capitis
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Keywords
dermoscopy, tinea capitis
References
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