Pregnancy has a habit of ignoring project plans.

Sometimes the second child is carefully scheduled, prenatal vitamins are lined up on the kitchen counter, medications have already been reviewed, and everyone has had a sensible conversation with their doctors.

Sometimes there is a positive pregnancy test on Tuesday morning and the planning phase lasts approximately four minutes.

For women with vitiligo, either scenario tends to produce the same questions: Will pregnancy make my vitiligo worse? Does vitiligo make pregnancy riskier? Should I stop treatment? Could my baby inherit it? And if my first pregnancy was uneventful, does that tell me anything about the second?

A new 2026 systematic review gives us a useful opportunity to revisit these questions. The short version is reassuring. The longer version — inevitably — is more interesting.

First question: Does pregnancy usually make vitiligo worse?

This sounds like something medicine ought to have settled decades ago. It hasn’t.

The newest systematic review, published in JEADV Clinical Practice in 2026, searched the literature through December 2024. The researchers initially found more than 1,700 records. After all the screening? Five studies qualified. And only two small cross-sectional studies, involving a combined 110 women, really provided useful information about how established vitiligo behaved during pregnancy.

What those limited data suggest is straightforward: around two-thirds remained stable, around one in eight improved, and around one in five worsened. A few cases of vitiligo beginning for the first time during pregnancy have also been reported, but they appear uncommon.

The scientifically respectable answer is therefore: pregnancy appears more likely to leave vitiligo alone than dramatically change it, but we cannot predict an individual woman’s course very well.

That may not make a great fortune cookie, but it is the correct advice.

Why would pregnancy change vitiligo at all?

Pregnancy is not simply nine months of higher estrogen. The maternal immune system undergoes a substantial recalibration so that it can tolerate a fetus containing genetic material that is, biologically speaking, only half maternal. Hormone levels change dramatically, cortisol changes, and inflammatory signaling behaves differently.

Because vitiligo is an immune-mediated disease, it is entirely plausible that this altered immune environment could change its activity. But pregnancy does not affect every autoimmune disease in the same way, and even women with the same condition can have very different experiences.

Vitiligo apparently belongs in the “mostly stable, occasionally better, occasionally worse” category.

Which, admittedly, describes quite a lot of parenting too.

What happens after delivery?

Childbirth is another enormous hormonal and immunological transition. Estrogen, progesterone and cortisol fall rapidly, pregnancy-related immune tolerance retreats, sleep becomes an endangered species, and psychological and physical stress can increase rather abruptly.

The actual vitiligo data remain small, but the two studies included in the new review suggest that roughly 63–66% of women remained stable postpartum, while about 17–28% worsened. Improvement also occurred, but less often.

That is not evidence for an inevitable postpartum flare. Quite the opposite: most women still remained stable. But the first months after delivery are a reasonable time to keep an eye on previously active disease.

There is, however, an important practical wrinkle: a woman may understandably pay rather less attention to three new spots on her elbow while simultaneously trying to keep a six-week-old human alive.

Does vitiligo make pregnancy dangerous?

This is where two related but different questions often get mixed together.

The new 2026 review primarily addresses the first question. For the second, we have several population studies, and the picture is not perfectly clean.

An Israeli study found no meaningful difference in adverse pregnancy outcomes between women with and without vitiligo. Larger Korean and Taiwanese database studies, however, found higher rates of spontaneous pregnancy loss among women diagnosed with vitiligo.

In the Taiwanese nationwide study, vitiligo was associated with about a 16% relative increase in the recorded risk of miscarriage. Importantly, investigators did not find a significant overall increase in preterm delivery, pre-eclampsia/eclampsia, gestational diabetes, stillbirth or fetal growth restriction.

So the sensible conclusion in 2026 is not:

“Vitiligo causes miscarriage.”

It is:

“Several large studies have detected a modest association with miscarriage. We do not yet know exactly why, and it is worth discussing rather than worrying about in isolation.”

The thyroid deserves more attention than the white patches

If I were planning pregnancy with vitiligo, this is one of the items I would actually put on the checklist.

Vitiligo frequently travels with autoimmune thyroid disease. Untreated significant hypothyroidism or hyperthyroidism during pregnancy matters much more medically than depigmentation itself.

If you have vitiligo and are planning a pregnancy, mention it — along with any personal or family history of thyroid or other autoimmune disease — to your obstetrician or primary-care physician. They can decide whether thyroid testing is appropriate for you.

This is a good example of why “vitiligo is only cosmetic” is not a particularly useful medical philosophy. The skin may not be what causes the problem. Sometimes it is the signpost.

What if this is my second pregnancy?

If your first pregnancy was uncomplicated and your vitiligo stayed quiet, that is certainly reassuring. It is not a contractual guarantee that pregnancy number two will behave identically.

Pregnancies differ. Your age may be different. Your thyroid status may be different. Your vitiligo may be more or less active. You may be using medications that did not exist or were not prescribed during pregnancy number one.

And then there is the small matter that pregnancy number two usually arrives in a household already containing child number one.

The useful questions remain the same: Was my vitiligo active recently? Do I have another autoimmune condition? Has my thyroid been checked appropriately? What am I currently applying or taking? Did I have any important complications last time?

Those answers are more useful than trying to decide whether “second pregnancies with vitiligo” form some special medical category. They do not.

And what if the second pregnancy was a surprise?

Do not panic and do not perform your own overnight pharmacology review on Google.

A great many pregnancies begin while somebody is taking or applying a medication that later needs to be reconsidered. That does not automatically mean that damage has occurred. It means the medication list should be reviewed promptly.

Write down everything: prescription creams, tablets, injections, supplements, “natural” products, home phototherapy and over-the-counter products. Then discuss the list with the clinician managing the pregnancy and, where needed, the dermatologist who prescribed your vitiligo treatment.

Pregnancy medicine is full of distinctions involving dose, timing, treated body surface area and trimester. “Safe” and “unsafe” are frequently less binary than the internet makes them sound.

Vitiligo treatments during pregnancy: What is considered compatible?

This is where generic advice becomes dangerous, because vitiligo therapy has changed substantially in the last few years.

Will my child inherit vitiligo?

Parents often hear two equally unhelpful answers:

Vitiligo is a polygenic, multifactorial disease. Many genetic variants contribute small pieces of susceptibility, and non-genetic influences also matter. Estimates of lifetime risk when one parent has vitiligo are usually around 5–7%.

Identical twins give us a useful clue. They share essentially the same DNA, yet when one identical twin has vitiligo, the other develops it only around 23% of the time in a major family study. Genetics clearly matters, but it is not sufficient by itself.

What if the father has it too?

Occasionally, parents ask about the double-whammy: What if both of us have vitiligo? Does the math just stack?

Not neatly. Having two affected parents would reasonably be expected to increase a child’s genetic susceptibility, but vitiligo is polygenic and we do not have a reliable percentage that can predict the risk for an individual child in this situation.

The identical-twin data are a useful reminder why. Even when two people share essentially the same DNA, vitiligo is far from inevitable in both. Genetics matters, but it is not the whole story; immune regulation, environmental influences and probably some biological chance matter too.

Genes load the dice. They do not write the script.

For one affected parent, the overwhelming majority of children will never develop vitiligo.

Should you test an unborn baby for “vitiligo genes”?

No routine clinical test can usefully tell you whether a fetus will later develop ordinary vitiligo. There is no single “vitiligo gene.” Current genetics describes susceptibility and probabilities, not a yes-or-no prenatal diagnosis.

Does vitiligo affect fertility?

There is no convincing evidence that loss of pigment itself reduces female fertility. If someone with vitiligo is having difficulty becoming pregnant, the usual fertility work-up remains appropriate. Do not automatically assume vitiligo explains it.

Again, associated thyroid disease matters more here than the color of the skin.

And breastfeeding?

Most of the same logic continues after delivery, but medications need another review because passage into breast milk becomes relevant.

NB-UVB is generally considered compatible with breastfeeding. Limited topical corticosteroids can usually be used with appropriate precautions; medication should not be left where an infant could directly ingest it from the skin.

Ruxolitinib cream deserves special attention: current European labeling contraindicates Opzelura during breastfeeding. If postpartum vitiligo begins spreading, do not simply restart whatever you were using before pregnancy without checking whether it fits with breastfeeding.

Your dermatologist has probably heard stranger questions before breakfast.

What should I actually do before trying for another baby?

For most women with vitiligo, preparation can remain refreshingly boring.

There is no special vitiligo pregnancy diet. There is no supplement stack proven to stop your child from inheriting it. And you do not need nine months of staring anxiously at the backs of your hands.

What the new paper really tells us

Perhaps the most important finding from the new systematic review is not the 65% stability figure. It is how little high-quality research exists.

The review found just five eligible studies, and only two small cross-sectional studies — 110 women in total — meaningfully described the course of established vitiligo during pregnancy. The authors also noted reliance on self-reporting, lack of standardized disease-activity measures, recall bias, incomplete documentation of treatment continuation and difficulty separating the effects of pregnancy from changes in therapy.

So the broad picture is reassuring, but many of the precise percentages in this article should be read as estimates, not predictions.

Pregnancy is not some exotic complication affecting three people on another continent. Women with vitiligo have babies every day.

We should have better data.