Correlation of Dermoscopic and Histopathologic Patterns in Leprosy - A Pilot Study

Area of Science:

• Dermatology
• Infectious Diseases
• Medical Imaging

Background:

• Leprosy, a chronic granulomatous disease caused by Mycobacterium leprae, is typically diagnosed via clinical, histological, and slit-skin smear findings.
• Dermoscopy offers a practical, accessible method for diagnosing leprosy and assessing patient response to treatment.

Purpose of the Study:

• To evaluate the utility of dermoscopy in diagnosing leprosy and its various manifestations.
• To correlate dermoscopic findings with clinical and histological diagnoses of leprosy and its reactions.
• To assess dermoscopy's role in monitoring treatment, including drug compliance.

Main Methods:

• An observational study involving 50 patients with leprosy undergoing multidrug therapy and anti-lepra reaction drugs.
• Correlation of clinical and histological findings with characteristic dermoscopic observations.
• Analysis of dermoscopic patterns in different forms of leprosy and during lepra reactions.

Main Results:

• Dermoscopy findings showed strong correlation with clinical and histological diagnoses.
• Characteristic patterns observed: hair/pigment loss in tuberculoid leprosy; xerosis and scaling in lepromatous leprosy.
• Specific vascular changes identified for leprosy reactions (e.g., erythema nodosum leprosum) and clofazimine-induced pigmentation ('honey comb pattern').

Conclusions:

• Dermoscopy is a valuable tool for aiding leprosy diagnosis, identifying reactions, and monitoring therapeutic progress.
• Distinct dermoscopic patterns facilitate rapid and accurate diagnosis of leprosy.
• Dermoscopy objectively assesses patient adherence to treatments like clofazimine.