The Seasonal Trend of Brittle Nails: A Google Trends Analysis of English-speaking Countries

Authors

  • Eric McMullen Division of Dermatology, Department of Medicine, University of Toronto, Toronto, ON, Canada https://orcid.org/0000-0001-9961-7999
  • Mahan Maazi Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
  • Jonathan Berkowitz Sauder School of Business, University of British Columbia, Vancouver, BC, Canada
  • Matthew Berkowitz Statistics and Actuarial Science, Simon Fraser University, Burnaby, BC, Canada
  • Jeffrey Donovan Department of Dermatology and Skin Science, University of British Columbia, Vancouver, BC, Canada; Donovan Hair Clinic, Whistler, BC, Canada https://orcid.org/0000-0002-8623-2974

DOI:

https://doi.org/10.2340/actadv.v106.adv-2025-0238

Keywords:

brittle nails, seasonality, Google Trends

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References

de Berker DAR, André J, Baran R. Nail biology and nail science. Int J Cosmet Sci 2007; 29: 241–275. DOI: https://doi.org/10.1111/j.1467-2494.2007.00372.x

Farran L, Ennos AR, Eichhorn SJ. The effect of humidity on the fracture properties of human fingernails. J Exp Biol 2008; 211: 3677–3681. DOI: https://doi.org/10.1242/jeb.023218

Piérard‐Franchimont C, Jebali A, Ezzine N, Letawe C, Piérard GE. Seasonal variations in polymorphic nail surface changes associated with diabetes mellitus. Acad Dermatol Venereol 1996; 7: 182–196. DOI: https://doi.org/10.1111/j.1468-3083.1996.tb00618.x

Sivesind TE, Szeto MD, Kim W, Dellavalle RP. Google Trends in dermatology: sScoping review of the literature. JMIR Dermatol 2021; 4: e27712. DOI: https://doi.org/10.2196/27712

van de Kerkhof PCM, Pasch MC, Scher RK, Kerscher M, Gieler U, Haneke E, et al. Brittle nail syndrome: A pathogenesis-based approach with a proposed grading system. J Am Acad Dermatol 2005; 53: 644–651. DOI: https://doi.org/10.1016/j.jaad.2004.09.002

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Published

2026-04-22

How to Cite

McMullen, E., Maazi, M., Berkowitz, J., Berkowitz, M., & Donovan, J. (2026). The Seasonal Trend of Brittle Nails: A Google Trends Analysis of English-speaking Countries. Acta Dermato-Venereologica, 106, adv–2025. https://doi.org/10.2340/actadv.v106.adv-2025-0238

Issue

Vol. 106 (2026)

Section

Research letter

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