Traction alopecia
Dermoscopic image of hair cast represented by detached hyperkeratotic and parakeratotic cells of the inner root sheath
Keywords: Alopecia, Cylindrical hair cast, Dermoscopy, Hair, Hair cast, Hair loss, Non-scarring alopecia, Patchy alopecia, Pseudonits, Repetitive scalp tension, Scalp, Skin of colour, Trichoscopy, White cast
What is traction alopecia?
Traction alopecia is a form of acquired hair loss that results from prolonged or repetitive tension on the scalp hair. It was first described in 1907 in subjects from Greenland who had developed hair loss along the hairline due to prolonged wearing of tight ponytails.
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Source: dermnetnz.org