Dermoscopy in Leprosy: A Clinical and Histopathological Correlation Study

Area of Science:

• Dermatology
• Infectious Diseases
• Medical Diagnostics

Background:

• Leprosy is a challenging infectious granulomatous disease with diverse clinical presentations.
• Traditional diagnosis relies on clinical examination, skin smears, and histopathology.
• Dermoscopy is an emerging noninvasive tool for dermatological diagnosis.

Purpose of the Study:

• To evaluate dermoscopic findings in various leprosy manifestations.
• To correlate dermoscopic features with clinical and histopathological findings.
• To assess dermoscopy's utility in leprosy diagnosis.

Main Methods:

• Prospective, cross-sectional study over 1 year.
• Inclusion of newly diagnosed leprosy patients or those treated for <6 months.
• Dermoscopic evaluation of representative lesions followed by biopsy.

Main Results:

• Correlation found between dermoscopic findings and histopathology in 73 patients.
• Characteristic findings include orangish-yellow/white structureless areas (dermal granuloma) and focal vascular structures.
• Dermoscopy helped differentiate leprosy from other granulomatous disorders by the relative absence of skin appendages.
• Novel findings include clofazimine-induced pigmentation patterns and orange globules on onychoscopy.
• Specific dermoscopic features identified for different leprosy types and reactions.

Conclusions:

• Dermoscopy is a valuable noninvasive tool for rapid leprosy diagnosis.
• It complements traditional investigative methods.
• Dermoscopy aids in identifying characteristic features and differentiating leprosy.