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Hypertrophic lichen planus versus prurigo nodularis: a dermoscopic perspective
Balachandra S Ankad1, Savitha L Beergouder1
1Department of Dermatology, S. Nijalingappa Medical College, Bagalkot, Karnataka, India.
Dermatology Practical & Conceptual
|May 26, 2016
Summary
Dermoscopy reveals distinct patterns for hypertrophic lichen planus (HLP) and prurigo nodularis (PN), aiding in differentiating these clinically similar conditions. These dermoscopic findings correlate with histopathology, establishing dermoscopy as a valuable diagnostic tool.
Area of Science:
- Dermatology
- Medical Diagnostics
Background:
- Hypertrophic lichen planus (HLP) and prurigo nodularis (PN) present with similar clinical and histopathological features, complicating diagnosis.
- A need exists for reliable methods to differentiate HLP and PN.
Observation:
- This observational case series evaluated dermoscopic patterns in 10 patients with HLP and 10 with PN.
- Dermoscopy was performed using a Dermlite 3 dermoscope, with histopathology used for confirmation.
Findings:
- HLP showed pearly white areas with peripheral striations (100%), gray-blue globules (60%), and yellowish structures (90%).
- PN exhibited red dots (70%), red globules (60%), and pearly white areas with peripheral striations (100%).
- Specific dermoscopic patterns were identified for both HLP and PN.
Implications:
- Dermoscopy demonstrates specific, histopathologically confirmed patterns for HLP and PN.
- Dermoscopy serves as an effective diagnostic tool for distinguishing between HLP and PN.
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