AAD
Author: Willhemenia Loremipsum Special session: Lorem ipsum dolor sit amet Category: Lorem ipsum View all results

Please login or create an account. If you do not have access to this content, you will be shown a 30 second preview and licensing options.

  • Presentation

Updates in Hair Disorders: Aiding the Dermatopathologist to Deliver a More Accurate Meaningful Report

Description

The presentation focuses on improving diagnostic accuracy and treatment customization in hair disorders through scalp biopsies. Emphasizing the importance of high-quality biopsies—ideally using a 4mm punch with horizontal or vertical sections—the speaker details how this method aids in diagnosing conditions like alopecia. Proper techniques and the number of sections are crucial for assessing follicular architecture and inflammation, leading to more precise treatment plans. Various hair disorders such as alopecia areata, scarring alopecia, and frontal fibrosing alopecia are discussed, highlighting the significance of recognizing different stages and inflammatory patterns within various biopsies. The speaker underscores the necessity for collaboration between dermatopathologists and clinicians, suggesting that detailed reporting can enhance treatment adaptations, like utilizing topical therapies depending on follicular density and inflammation severity. The importance of recognizing features such as Demodex infestation and distinctive histopathological patterns is also noted, stressing the need for ongoing research and observation in hair loss conditions to refine treatment strategies.

View more

Conclusions

  • Scalp biopsies are crucial for diagnosing scarring versus non-scarring alopecia and assessing disease activity.
  • Using horizontal sections during biopsies effectively assesses follicular architecture, which is essential for accurate diagnosis.
  • A 4mm punch biopsy is recommended for optimal follicle evaluation and diagnosis accuracy.
  • Accurate counting of follicular units and calculating ratios, including terminal to vellus ratios, is essential for treatment decision-making.
  • Identifying types of infiltrates and follicular density significantly informs treatment options and prognostic outcome.
  • Trichoscopy-guided biopsies lead to better diagnostic accuracy in cases of scarring alopecia.
  • Recognizing patterns such as 'the eyes and goggles sign' can assist in the evaluation of scarring alopecias on low power sections.
  • Variability in inflammatory infiltrate density in conditions like frontal fibrosing alopecia influences treatment approaches.
  • Demodex presence in scalp biopsies may complicate diagnoses and must be reported for optimal treatment.
  • Early detection of inflammation in alopecias can significantly impact treatment effectiveness and patient stabilization.
  • Headington, J.T. (1984). Vertical and horizontal sections for scalp hair biopsies. A J Dermatopathol.
  • Mariya Miteva, MD (2013). A Comprehensive Approach to Hair Pathology of Horizontal Sections. Am J Dermatopathol.
  • Whiting, D. (1993). Androgenetic Alopecia: A Study of Follicular Counts and Ratios. JAAD 28, 755-763.
  • Miteva, M. et al. (2012). Detailed Analysis of Hair Pathology. J Cut Pathol, 39(6), 596-602.
  • Miteva, M., Tosti, A. (2013). Dermoscopic features of cicatricial alopecia. J Eur Acad Dermatol Venereol.
  • Prasad, S., Marks, D.H., Burns, L.J., Yu, J.D., LoSicco, K. (2020). Patch testing and contact allergen avoidance in patients with lichen planopilaris. J Am Acad Dermatol, 83(2), P659-661.
  • Helou, W., et al. (2016). Demodex Folliculitis of the Scalp: Clinicopathological Study of an Uncommon Entity. The American Journal of Dermatopathology, 38(9), 658-663.