Open AccessLichen simplex chronicus on the scalp: Broom fibers on dermoscopy; gear wheel sign and hamburger sign on histopathology
Author(s) -
Sandip Agrawal,
Rachita Dhurat,
Smita Ghate,
Aseem Sharma,
Ravina Surve,
Sanober Burzin Daruwalla
Publication year - 2020
Publication title -
indian dermatology online journal
Language(s) - English
Resource type - Journals
eISSN - 2249-5673
pISSN - 2229-5178
DOI - 10.4103/idoj.idoj_350_19
Subject(s) - scalp , sign (mathematics) , itching , dermatology , medicine , histopathology , histopathological examination , anatomy , pathology , mathematical analysis , mathematics
Lichen simplex chronicus (LSC) is characterized by lichenification of the skin because of primary excessive scratching. Herein, we present two cases of scalp LSC with a patch showing localized hair loss and paroxysmal severely itching on that area. Dermoscopy examined the presence of broom hair fibers while histopathological examination revealed gear wheel sign, hair shafts split in two (the hamburger sign), and decrease in the size of the sebaceous glands.