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Vitiligo

Can Vitiligo Be Inherited? What to Know When There Is a Family History

Jung Min Bae Jung Min Bae Dermatologist · Heal House Gangnam Branch

"What if my child also gets vitiligo?" This is the question parents worry about most. To summarize, it is true that vitiligo has a genetic component. But it does not mean that if a parent has it, the child will definitely get it. Today, we carefully examine what that difference is.

Is Vitiligo Hereditary?

Genetic factors play a part. But it is not a disease determined solely by genetics. You can think of it like height — multiple factors work together.

Vitiligo is not determined by a single gene. In addition to multiple genetic predispositions, environmental factors such as the body's immune status, oxidative stress, and skin trauma also play a role. In fact, vitiligo is now understood as a complex disease in which "pigment cells disappear when environmental factors combine in a genetically predisposed person."

The important point is that vitiligo is different from typical "genetic diseases." Genetic diseases refer to conditions where an abnormality in a specific gene is passed directly to offspring, but vitiligo is not a disease that is necessarily passed to children. Even if a predisposition is inherited, it may not develop if there are no environmental triggers. Therefore, it is accurate to understand genetics as "a factor that slightly increases the possibility."

If a Parent Has Vitiligo, Will the Child Definitely Develop It?

No. It is much more common for a child not to get it even if a parent has it. The probability is not as high as you might worry.

The probability of vitiligo appearing in the family of a person with vitiligo is known to be around 20%. Looking at this number the other way, it means that many cases occur without a family history, and it is more common for a child not to get it even if a parent has vitiligo.

Here is one fact to help you understand. Even in identical twins with the same genes, only some cases have both twins developing vitiligo. The fact that it is more common for only one twin to develop it even with 100% identical genes shows that vitiligo is not determined solely by genetics. So you do not need to prematurely conclude that "it's genetic and there's nothing you can do."

Common Misunderstandings About Family History

The most common misunderstanding is "If someone in my family has it, I will definitely get it too." This differs from reality.

Common misunderstandingActual fact
If a parent has it, the child will definitely get it.It is more common for it not to occur.
If there is no family history, it will never occur.It often occurs without a family history.
It's genetic, so there is nothing that can be done.Even if it occurs, it can be managed with treatment.

In summary, family history is just "a reference that slightly increases the possibility." It is neither a certainty nor a reason to give up. In particular, the idea that "it's genetic so treatment is useless" is not true. Vitiligo, whether there is a family history or not, is a disease that can be sufficiently managed with appropriate treatment for the condition.

What to Know If You Have a Family History

Rather than worrying excessively, noticing changes early is much more helpful. This is because the earlier you respond to vitiligo, the better.

If you have a family history, we recommend lightly checking your skin for new white spots. If you notice changes, do not delay and have it checked through a consultation. This is because early detection and management increase the likelihood of stopping progression. On the other hand, there is no need to specifically stop something or restrict food for prevention. Since there is no sure way to prevent it yet, a lifestyle that reduces irritation and early detection are more realistic preparations than extreme restrictions.

In other words, it is enough to regard family history not as "a reason for anxiety" but as "a reason to watch a little more attentively."

Jung Min Bae

Dermatologist · Gangnam Branch

With sincere care and continuous research, I will be a reliable companion for vitiligo patients.