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Year : 2019  |  Volume : 20  |  Issue : 4  |  Page : 329-331

Nits and pseudonits in Indian children: A dermoscopic perspective

Department of Dermatology, S. Nijalingappa Medical College and HSK Hospital, Bagalkot, Karnataka, India

Correspondence Address:
Dr Aakash Gupta
Department of Dermatology, S. Nijalingappa Medical College and HSK Hospital, Bagalkot - 587 103, Karnataka
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ijpd.IJPD_129_18

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Background: Hair casts or pseudonits are tubular accretions that are movable encircling the hair shafts of the scalp. It is commonly confused as head lice or pediculosis capitis, which is a common concern in pediatric age group. Hair casts are common in psoriasis, seborrheic dermatitis, and pityriasis amiantacea. This misdiagnosis is a reason of patient and physician anxiety. We attempted to evaluate significance of trichoscopy in differentiating nits and pseudonits and therefore a better treatment plan. Aims and Objective: To evaluate trichoscopic patterns in nits and pseudonits. Methodology: The study was conducted in a tertiary hospital. Ethical clearance and consent from patients were obtained. DermLite 3 with ×10 magnification was employed for trichoscopy. Tiny concretions on the hair shafts were examined with trichoscopy. Patterns were analyzed. Results: Totally, 25 patients were included in the study with 7 boys and 18 girls. The mean age was 9 years. Trichoscopy demonstrated cylindrical white sheaths (2–7 mm) encircling the hair shafts in 15 patients (60%). Forty percent of the patients showed pyriform-shaped translucent and yellowish structures (0.8 mm) attached to hair shafts. Based on the trichoscopy patterns, diagnosis of pseudonits and nits was made in former and latter groups, respectively. Conclusion: Trichoscopy plays an important role in differentiation of nits and pseudonits. Since nits are contagious, correct diagnosis is of utmost importance for better management. Thus, trichoscopy is a reliable diagnostic procedure in daily practice of dermatologists.

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