Onychoscopy: Dermoscopy of the Nails

Area of Science:

• Dermatology
• Oncology
• Medical Diagnostics

Background:

• Onychoscopy involves dermoscopic examination of the nail unit.
• Established dermoscopic criteria exist for diagnosis, but limitations remain.
• Suspicious or potentially malignant nail alterations require surgical intervention and histopathology.

Purpose of the Study:

• To evaluate the diagnostic utility of onychoscopy in identifying nail unit conditions.
• To highlight the role of onychoscopy in conjunction with other diagnostic methods.

Main Methods:

• Dermoscopic examination of the nail unit (onychoscopy).
• Review of existing literature on dermoscopic criteria for nail diagnosis.
• Comparison of onychoscopic findings with histopathological results where applicable.

Main Results:

• Onychoscopy enhances the visualization of visible nail features.
• It reveals cryptic features that are valuable for diagnosis.
• Simple visualization alone may be insufficient for many nail conditions.

Conclusions:

• Onychoscopy is a valuable tool for improving the diagnosis of nail unit abnormalities.
• It complements, but does not replace, surgical intervention and histopathological evaluation for suspicious lesions.
• Nail biopsy is not always diagnostic, underscoring the importance of adjunctive methods like onychoscopy.