There is no age limit.It can be from birth to any time in life.It has also got hereditary factor in it.People who go through extreme stress can also show signs of vitiligo.
It has nothing to do with transfer through pregnancy from mother to baby.If the mother had, then the child may develop later on over the period of time.
There are many case studies which show that it is genetic.But many people come and say that nobody in their family has it and they have it.
Some hormonal disturbances like thyroid, hypothyroidism can also be a coexisting condition.Hypothyroidism and vitiligo are auto immune disorders.Auto immune part is the common part in both the diseases.
There are certain chemicals that are depigmenting exposed to which can cause vitiligo.Acid chemicals like trichloroacetic acid and hydroquinone can cause vitiligo.These chemicals are not available to a layman so easily unless they're in a lab.. nnProgressive vitiligo that means unstable vitiligo where vitiligo continues to spread and may develop many patches or a single patch can increase in extent.Its absolutely non-contagious and its only a social stigma.Its not a debilitating condition..

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