Correlation between clinical and mycological diagnosis of onychomycosis

Md Anwar Husain, Mohd. Nurul Alam, Yasmin Joarder, Dr. Wahidujjaman, Monalisa Ferdous

Abstract


Objective To evaluate the correlation between clinical and mycological diagnosis of onychomycosis.

 

Methods It was a cross-sectional observational study carried out in the Department of Dermatology and Venereology, Ibn Sina Medical College and National Medical College, Dhaka during the period from January 2014 to December 2015. Total 200 samples were included in this study. Clinical diagnosis of onychomycosis was confirmed by KOH smear and fungal culture.

 

Results A total of 200 clinically diagnosed patients of onychomycosis were included in this study. Out of 200 patients of onychomycosis, total culture positive were 152 (76%). Both KOH and culture positive were 136 (true positive), KOH-ve but culture positive were 16 (false negative), KOH+ve but culture negative were 8 (false positive), both KOH and culture negative were 40 (true negative). Out of 152 culture positive cases, isolated fungi included Trichophyton mentagrophytes 72 (47%), T. rubrum 64 (42%) and Candida spp. 16 (10%).

 

Conclusion The study concluded that onychomycosis was predominant among the advance age with slight female preponderance. DLSO was the most common clinical type. Fingernail involvement was more common than toenail involvement. Dermatophytes were the common pathogens.

 


Keywords


Onychomycosis, Trichophyton mentagrophytes, T. rubrum, Candida, distolateral subungual onychomycosis

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