Trichoscopy in alopecias: diagnosis simplified.

Area of Science:

• Dermatology
• Dermoscopy
• Trichology

Background:

• Hair and scalp disorders are common, requiring accurate diagnosis.
• Traditional diagnostic methods can be invasive or lack specificity.
• Trichoscopy offers a non-invasive approach to visualize hair and scalp structures.

Purpose of the Study:

• To describe trichoscopic findings in common hair and scalp disorders.
• To highlight trichoscopy's utility as a bedside diagnostic tool.
• To evaluate trichoscopy's role in biopsy guidance and treatment monitoring.

Main Methods:

• Dermoscopic imaging of the scalp and hair (trichoscopy).
• Categorization of trichoscopic observations into hair, vascular, pigment, and interfollicular patterns.
• Review of findings in various cicatricial and non-cicatricial alopecias.

Main Results:

• Trichoscopy reveals distinct patterns for conditions like androgenetic alopecia, alopecia areata, and lichen planopilaris.
• It aids in differentiating between cicatricial and non-cicatricial alopecias.
• Trichoscopic findings assist in selecting optimal biopsy sites and assessing treatment response.

Conclusions:

• Trichoscopy is a simple, non-invasive, and valuable bedside tool for diagnosing hair and scalp disorders.
• It can reduce the need for biopsies and improve diagnostic accuracy.
• Trichoscopy facilitates objective photographic monitoring of treatment efficacy.