Cell Thumb Replaces Writer's Bump: Changing Times, Changing Callouses

Aleksandra L Lindgren; Andrea Hui Austin; Kathleen M Welsh

doi:10.1159/000505310

Cell Thumb Replaces Writer's Bump: Changing Times, Changing Callouses

Case Rep Dermatol. 2020 Jan 6;12(1):1-4. doi: 10.1159/000505310. eCollection 2020 Jan-Apr.

Authors

Aleksandra L Lindgren¹, Andrea Hui Austin^{2

3}, Kathleen M Welsh³

Affiliations

¹ University of Queensland - Ochsner School of Medicine, New Orleans, Louisiana, USA.
² Department of Dermatology, State University of New York Downstate Medical Center, Brooklyn, New York, USA.
³ Bay Area Cosmetic Dermatology, San Francisco, California, USA.

Abstract

Common callouses are formed by the accumulation of keratinocytes in the stratum corneum in response to excess pressure or friction. We report 2 cases of unusual callous formation and an additional 25 more sequential cases that were due to excessive cell phone grip.

Keywords: Callous; Cell phone usage; Finger bump; Hand dermatitis.

Publication types

Case Reports