Trichorrhexis nodosa
Definition
Trichorrhexis nodosa is a problem in which thickened or weak points (nodes) along the hair shaft cause your hair to break off easily.
Overview, Causes, & Risk Factors
Your genes may play a role in whether or not you develop trichorrhexis nodosa. Certain things you do to your hair -- such as blow-drying, over-brushing, perming, or excessive chemical use -- appear to trigger the condition. In some cases, trichorrhexis nodosa may be caused be an underlying disorder such as hypothyroidism, argininosuccinicaciduria, Menkes' kinky hair syndrome, Netherton syndrome, or trichothiodystrophy.
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