Tubular Hair Casts in Trichoscopy of Hair and Scalp Disorders

International Journal of Trichology
Mahesh MathurNisha Kc

Abstract

Hair casts have been reported in a variety of hair and scalp disorders. Trichoscopy allows a quick and noninvasive method for the evaluation of hair and scalp disorders in high magnification. However, the study of hair casts seen in trichoscopy is lacking. The main objective is to study the occurrence and patterns of tubular hair cast (THC) in different hair and scalp disorders. The patients with hair and scalp disorders presenting at the dermatology department of our hospital were evaluated using trichoscopy. Cases of primary parakeratotic disorders and behavioral disorders were excluded. After a detailed history and evaluation of the hair and scalp, histopathology, light microscopic examination, potassium hydroxide examination, and fungal culture were done when necessary. THC was seen in total 21 cases of seven different hair and scalp disorders. Of these, the majority of cases were of discoid lupus erythematosus (DLE) (5/21) and maximum frequency of THCs within a disorder was seen in cases of pemphigus foliaceus (PF) (50%). Proximal casts occurred in 90.47% of cases. Single cast involving two shafts was seen in a case of PF, and two casts within a single shaft were seen in two cases of DLE and one case of alopecia areata. TH...Continue Reading

Citations

Oct 1, 2019·Journal of the European Academy of Dermatology and Venereology : JEADV·M Mathur, P Acharya
Nov 22, 2019·International Journal of Dermatology·Aisleen Diaz, Mariya Miteva
Dec 16, 2020·International Journal of Dermatology·Magdalena Żychowska, Małgorzata Żychowska

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