Clinical and Laboratory Findings in Trauma-Induced Nail Dystrophy versus Onychomycosis

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Charussri Leeyaphan
Sumanas Bunyarata
Navaporn Chadchavalpanichaya
Chuda Rujitharanawong
Sutasinee Phaitoonwattanakij
Lalita Matthapan

Abstract

Objective: The study aims to investigate prevalence, clinical characteristics, and laboratory findings of traumatic toenails in comparison with those of onychomycosis.
Methods: This cross-sectional study included hallux valgus (HV) patients attending Foot Clinic. Descriptive statistics, Chi-square test, Student’s t-test and Mann-Whitney U test were used in statistical analysis.
Results: A total of 81 patients with a mean age of 65 years old, of which 77 were females (95.1%), were enrolled. The prevalence of onychomycosis was 25.9%, whereas that of trauma-induced nail dystrophy was 55.6%. There were 18 (22.2%) patients with fungal feet infection. Among 21 patients with nail infections, three had subclinical presentation. Fifteen patients (71.4%) with onychomycosis were infected with dermatophytes (DMPs). The others were caused by nondermatophytes (NDMs), of which 14.2% were Neoscytalidium dimidiatum. Comparing with traumatic nail, statistical analysis revealed HV angle of greater than 30 degrees and the presence of fungal foot infection to be significantly associated with onychomycosis (p=.011 and p<.001, respectively).
Conclusion: One-fourth of HV patients had onychomycosis. Severe foot deformities and concomitant fungal foot infection were significantly associated with onychomycosis. Holistic foot and nail examination is essential for distinguishing onychomycosis and traumatic induced nail dystrophy. Subclinical presentation was common.

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How to Cite
Leeyaphan, C., Bunyarata, S., Chadchavalpanichaya, N., Rujitharanawong, C., Phaitoonwattanakij, S., & Matthapan, L. (2018). Clinical and Laboratory Findings in Trauma-Induced Nail Dystrophy versus Onychomycosis. Siriraj Medical Journal, 70(6), 490–495. Retrieved from https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/163153
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Original Article