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Trichoschisis is a medical term that refers to a particular type of hair damage. It refers to strands of hair that break along their length. These breaks occur in the form of clean, sharply defined edges. This distinguishes trichoschisis from split ends, where the ends of the hair split.
The causes of trichoschisis can be varied. It is often due to genetic factors, but can also be caused by excessive mechanical stress on the hair, such as excessive brushing or aggressive hair care. In addition, malnutrition and certain genetic diseases, such as the rare trichothiodystrophy, can lead to brittle, fragile hair that is prone to trichoschisis.
