Trichoscopic criteria of different stages of male pattern hair loss

Abstract

Background and aim Male pattern hair loss is a common noncicatricial alopecia that results from progressive miniaturization of the hair follicle. The aim of this study is to evaluate the role of trichoscopy in differentiating between severe and mild cases of male pattern hair loss. Patients and methods A hospital-based cross-sectional study was carried out on 300 males with pattern hair loss. Detailed history, clinical examination, and trichoscopy were performed. All participants were divided according to severity into two groups. Group 1 (n=207) included stages one, two, and three, while group 2 (n=93) included stages four, five, six, and seven on the basis of the Hamilton Norwood classification. Results The frequency of yellow dots, white dots, vellus hair, and hair shaft diversity (HSD) more than 20% was higher in group 2 than group 1 (P≤0.05). Conclusion Trichoscopy is a very valuable and useful method to differentiate between severe and mild cases of male pattern hair loss.

Keywords

• dermoscopy
• male pattern hair loss
• trichoscopy