Traction alopecia is the hair loss that occurs after persistent gentle pulling on the roots over several hours or days.
Unlike a hair pluck which is painful, persistent gentle pulling may go unnoticed until bald spots or alopecia starts to appear.
...Even tight ponytails can produce traction alopecia, which means the new style of the 'man braid' and the 'man bun' can also have an effect on men's hairlines.
...When hair is pulled back in a ponytail, the hairs at the margins of the scalp tend to receive the greatest tensile force and hair loss becomes most noticeable on the scalp margins and the outermost hairs of the braid. These hairs are lost first, producing a receding hairline and widening of the part lines.
...Twisting hair into a bun on the top of the head can produce a horseshoe alopecia in the centre of the scalp.
...Unfortunately the only measure that halts progression of traction alopecia is redistributing the tension in the hair. A return to normal is not possible for those who have early androgenetic alopecia or who have developed scarring from prolonged traction. However for most people, a cure is available with their own hair brush.