Famous What Causes White Hair References. Piebaldism is a genetic condition, typically present at birth, in which a person develops an unpigmented or white patch of. Web from the time a person notices a few gray hairs, it may take more than 10 years for all of that person's hair to turn gray.
Mallari, m.d., head of the hair unit of the dermatology center at st. It can happen due to another condition or medication. For instance, thyroid problems lead to lower levels of.
