trichorrhexis /trich·or·rhex·is/ (-rek´sis) the condition in which the hairs break.
trichorrhexis nodosa
trichorrhexis nodo´sa a condition marked by fracture and splitting of the cortex of a hair into strands, giving the appearance of white nodes at which the hair is easily broken.
trichorrhexis no·do·sa (n -d s )n. A condition in which minute nodes are formed in the hair shafts, weakening the hair and causing splitting and breaking. Also called clastothrix, trichoclasia. |
trichorrhexis
the condition in which the hairs are split and feather-like.
trichorrhexis nodosa
structural abnormalities of the hair shaft result in breakage and hypotrichosis; seen in horses, dogs and humans. Physical or chemical damage to the hair is usually responsible.
trichorrhexis nodosa
Dermatology A defect in the hair shaft characterized by thickened weak points–nodes that cause hair breakage; TN may have a genetic basis but is precipitated by environmental factors–eg, “perming,”
blow drying, aggressive brushing, chemical exposure
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