Sudden
white hair onset
There are many folk tales from different parts of the world about
people going white overnight, particularly after having a sudden
and extreme shock. Frequently quoted examples of famous people going
white or gray overnight include Sir Thomas More and Marie Antoinette.
There may be some question as to the historical accuracy in the
recording of these events, but people's hair can apparently go white
overnight.
However, it's a visual trick! Going white overnight usually happens
in those who have salt and pepper hair - that is a mixture of pigmented
and white hair. The pigmented hair is selectively shed while the
white hair survives. The hair that is perceived as suddenly whitening
was already white, but the visual illusion makes it look as though
the person has gone white overnight. This sudden white hair development
is most likely due to alopecia areata which can sometimes selectively
target pigmented hair fiber containing hair follicles. Alopecia
areata onset can sometimes be induced by sudden shock.
Sudden
white hair onset references
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