Acquired Trichorrhexis Nodosa Secondary to Trichoteiromania: Prompt Diagnosis Using Trichoscopy.

Trichorrhexis nodosa (TN) is a common hair shaft defect that develops as a result of excessive physical or chemical trauma. Microscopy is considered the gold standard for its diagnosis. Outpatient diagnosis thus becomes difficult in the absence of availability of microscope. Trichoscopy is emerging as an excellent tool in outpatient diagnosis of hair shaft defects. Here, we report a young girl with localized TN secondary to trichoteiromania where trichoscopy clinched the diagnosis. Classical appearance of nodes in hair shaft and transverse hair shaft fractures producing "two brooms stuck in opposite direction" was evident. This case is being reported to emphasize the advantages of trichoscopy in quick diagnosis of hair shaft defects with review of published literature.