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The Trichoscopy Derived Sinclair Scale: Enhancing visual assessment through quantitative trichoscopy.

Michal Kasprzak1, Justyna Sicińska2, Rodney Sinclair3,4,5

  • 1TrichoLAB, Warsaw, Poland.

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|December 20, 2018
PubMed
Summary
This summary is machine-generated.

The Sinclair Scale for hair loss can now be accurately estimated using quantitative trichoscopy. This new "Trichoscopy Derived Sinclair Scale" offers a more objective and reproducible method for assessing female pattern hair loss severity.

Keywords:
Sinclair Scaleandrogenetic alopeciadermoscopyfemale pattern hair losshair thicknessquantitative trichoscopy

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Area of Science:

  • Dermatology
  • Medical Imaging
  • Hair Biology

Background:

  • The Sinclair Scale is a standard visual tool for assessing female pattern hair loss (androgenetic alopecia, AGA) severity and treatment response.
  • While quick, the Sinclair Scale relies on subjective visual assessment.
  • Quantitative trichoscopy offers objective but time-consuming hair loss evaluation.

Purpose of the Study:

  • To investigate the correlation between the Sinclair Scale and quantitative trichoscopy parameters.
  • To introduce and validate a novel parameter, cumulative hair thickness density.
  • To develop a method for deriving the Sinclair Scale from trichoscopy data.

Main Methods:

  • Patients with varying stages of AGA were assessed using both the Sinclair Scale and quantitative trichoscopy.
  • Correlation analysis was performed between the Sinclair Scale and trichoscopy-derived parameters.
  • A new parameter, cumulative hair thickness density, was introduced and analyzed.

Main Results:

  • A strong correlation was found between the Sinclair Scale and cumulative hair thickness density.
  • The observed correlation is sufficient to estimate the Sinclair Scale using trichoscopy data.
  • A formula was derived to calculate a 'Trichoscopy Derived Sinclair Scale'.

Conclusions:

  • The 'Trichoscopy Derived Sinclair Scale' provides an objective measure of hair midline density.
  • This method differentiates trichoscopy-based assessment from traditional visual inspection.
  • The derived scale offers a more reproducible and accurate evaluation of AGA severity.