2016 Volume 78 Issue 3 Pages 252-256
We report a 50-year-old Japanese woman who had been aware of short hair growth on the parietal scalp region for 2 years before her first visit to our hospital. The symptoms could not be improved by topical steroids, which were prescribed by the previous dermatologist. When she visited our department, there were plenty of short hairs on her parietal scalp. Her short hairs had multiple punctate white nodules, and were easily cut off at nodules. However, her hairs could not be easily pulled out. There were no other abnormal findings. The patient had scratched her scalp and had her hair straight-permed at regular intervals. From her personal history, clinical symptoms, and microscopic findings, we diagnosed her as acquired trichorrhexis nodosa caused by a mechanical stress. Oral fexofenadine hydrochloride was given and the regular straight-perm treatment was stopped. Six months later, her hair symptoms have improved and there has been no recurrence.
