Rogue Hairs: A Mixed-Method Characterization of a Previously Unreported Entity

Skin Appendage Disord. 2024 Aug;10(4):301-306. doi: 10.1159/000538622. Epub 2024 May 2.

Abstract

Introduction: We define rogue hairs as unusually long hairs on the face outside of the typical hormone-driven hair-bearing areas. These represent a common and previously undocumented phenomenon. This mixed-method study describes the frequency and clinical features of rogue hairs using a case series, patient survey, and social media analysis.

Methods: Clinical cases were identified by dermatologists, and social media platforms were searched for additional cases. Social media comments were reviewed using qualitative thematic analysis. Surveys were administered to patients at an academic dermatology clinic.

Results: The case series revealed these hairs are seen in children and adults, men and women, and across races. Of the surveyed patients, 18% reported rogue hairs. Social media analysis highlighted common experiences of sudden appearance, frequent removal attempts, and minimal interaction with dermatologists.

Conclusion: This mixed-method study defines rogue hairs on the face, underscoring their prevalence despite their benign nature. While the biological explanation for these hairs remains unknown, the study highlights the potential of social media as a tool for clinical inquiry and enhanced understanding of the patient experience. The study provides evidence-based information for individuals experiencing rogue hairs and prompts future research into the biologic mechanisms underlying this common phenomenon.

Keywords: Hair; Hair disease; Skin care; Social media.

Plain language summary

This research defines a new term called “rogue hairs” which are unusually long hairs on the face outside of the places where long hairs typically grow. These hairs are common but were not previously reported in medical literature. This study describes how often these hairs occur, where they occur, and other details about the people who have them. People with rogue hairs were identified by dermatologists, and social media platforms were searched to find additional people with these hairs. This study also used surveys and social media websites to learn about people with these hairs. The results showed that these hairs are seen in children and adults, men and women, and across races. Eighteen percent of the surveyed patients reported rogue hairs. Social media analysis showed common experiences of sudden appearance, frequent attempts to remove the hairs, and minimal interaction with dermatologists. The cause for these hairs is not known. This study highlights the potential of social media as a tool for answering clinical questions and better understanding the patient experience. The study provides evidence-based information for individuals experiencing rogue hairs and prompts future research into the causes of this common phenomenon.

Grants and funding

This work was supported by the John E. Olerud Endowed Chair for Dermatology Training.