BibTeX
@MISC{Buster_trichorrhexisnodosa,
author = {Kesha J. Buster and Anna Levin},
title = {Trichorrhexis Nodosa (Hair Breakage)},
year = {}
}
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Abstract
Trichorrhexis nodosa (TN) is a common disorder characterized by hair breakage due to weak points in the hair. Though there are inherited forms, the most common type of TN is due to physical or chemical trauma to the hair. It occurs more frequently in individuals of African origin with very curly hair. 1 The spiral shape of the hair follicle and hair shaft predispose African hair to breakage. 2 African hair naturally is less dense and grows slower than hair types of other ethnic groups 3 and it is at increased risk for significant damage when exposed to cosmetic treatments. Cause Even in its natural state, African hair is more vulnerable to breakage. The curlier the hair, the more it is susceptible. 2 It also has a tendency to form knots naturally, and when the knotted hair is combed, hair breakage can occur. 1,4 However, there are 4 major hair care practices that lead to hair breakage 5-6: heat, chemical straightening or permanent waving, permanent hair color, and drying hair products. Heat: Heated hair styling tools (e.g., blow dryer, hot combs, curling irons, flat irons, etc.) use extremely high temperatures to temporarily alter hair shape and style. This heat can weaken hair
Keyphrases
hair breakage trichorrhexis nodosa african hair blow dryer cosmetic treatment permanent waving spiral shape high temperature weak point permanent hair color hair shape major hair care practice common disorder ethnic group hair shaft predispose african hair flat iron significant damage inherited form chemical straightening african origin hair type hot comb hair follicle chemical trauma natural state hair product common type curly hair
