You may see a line linea nigra extending from the pubic area over the belly, or darkening of the skin all over the body. Changing hormones, particularly the excess of estrogen and progesterone, is the main cause of melasma during pregnancy.
Beyond that, the dark patches on the face can be exacerbated by sun exposure, the use of certain skin care products or treatments, and even genetics. Chloasma may also be worsened by hormonal imbalances that may have been present even before pregnancy. Whatever the case, your melanocyte-stimulating hormones react to these triggers by making an excess of protective pigments dark patches on the skin called melanin.
Melasma may start at any point in your pregnancy, though it most commonly begins in the second or third trimester. Again, there are a variety of factors at play when it comes to darkening pigment. Your skin color and type may make this condition more or less noticeable. That said, it may take time — possibly months — for it to completely fade without any targeted treatment.
Speak with your doctor about ways to treat your melasma during pregnancy. Your doctor may refer you to a dermatologist for more information. One reason is that it may resolve on its own. And some treatment methods may not be safe or effective to use when pregnant. The best course of treatment may actually be prevention, with the help of a few lifestyle changes.
Limit sunbathing and try relaxing under a tree or umbrella instead. Head out early in the morning or later in the evening when the sun is low. Look for products that contain zinc oxide, titanium dioxide, or other physical blockers mineral sunscreens versus those that rely on chemical blockers. Physical blocking sunscreens tend to offer broader protection and may be less irritating to the skin. Another option for sun cover is clothing with or without UV protection, such as SPF rash guards or sun protective clothing.
What about the face? Wide brimmed hats are your best friend. Face washes, lotions, and serums that irritate your skin may make melasma worse.
Slather up with gentle products instead. The same goes for makeup you may use to conceal the dark areas. Look for noncomedogenic or hypoallergenic foundations, concealers, powders, and other products.
Related: Your guide to pregnancy-safe skin care. You may be able to lighten your melasma using ingredients from your pantry. BabyCenter's editorial team is committed to providing the most helpful and trustworthy pregnancy and parenting information in the world. When creating and updating content, we rely on credible sources: respected health organizations, professional groups of doctors and other experts, and published studies in peer-reviewed journals. We believe you should always know the source of the information you're seeing.
Learn more about our editorial and medical review policies. American Academy of Dermatology. Join now to personalize. Photo credit: Thinkstock. Is it normal to have melasma during pregnancy? What causes melasma? Is my linea nigra related to melasma? How can I prevent melasma from getting worse during pregnancy? Will I still have melasma after my pregnancy? Are darkened spots on skin during pregnancy ever a sign of illness? Sources BabyCenter's editorial team is committed to providing the most helpful and trustworthy pregnancy and parenting information in the world.
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Has your skin changed color since you've been pregnant? Here's what causes your skin to darken during pregnancy and what to do about it. Back to Top. In This Article. When does skin discoloration start during pregnancy? Continue Reading Below.
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