Lupus and Miscarriage: Risk, Planning and Treatment

Reviewed by Dr. Neeru Thakral, Director and Senior Obstetrician and Gynaecologist, Thakral Hospital and Fertility Centre, Gurgaon.

Yes, lupus (systemic lupus erythematosus, or SLE) can raise the risk of miscarriage, stillbirth, early delivery and pre-eclampsia. But most women with lupus can have a healthy baby, especially when the disease has been quiet for at least six months before conception, medicines are changed to pregnancy-safe ones in advance, antiphospholipid antibodies are tested, and the pregnancy is followed closely by an obstetrician and a rheumatologist together.

Lupus is most common in women of childbearing age, so the question of pregnancy comes up early in a woman's life with the disease. If you have been told you have lupus and you are afraid of losing a baby, or you have had a miscarriage and are wondering if lupus is the reason, this guide is for you. We will explain what lupus does to a pregnancy, which risks are real, what you can do before and during pregnancy, and when to ask for urgent help.

Many people searching "can lupus cause miscarriage" are also looking at the larger picture of autoimmune causes. If that is you, our guide on autoimmune causes of early pregnancy loss covers the wider set of conditions.

What lupus does to the body and to pregnancy

In lupus, the immune system mistakes the body's own tissues for foreign ones and attacks them. It can affect the joints, skin, kidneys, blood cells, heart and brain. In pregnancy, three things matter most:

1. Disease activity. A pregnancy that starts while lupus is active has a higher chance of problems than one that starts when the disease is quiet.
2. Kidney involvement (lupus nephritis). Active kidney disease raises the risk of high blood pressure, pre-eclampsia and loss of the pregnancy.
3. Antibodies in the blood. Some women with lupus carry antiphospholipid antibodies, which make the blood more likely to clot and can block the tiny blood vessels of the placenta. Others carry anti-Ro and anti-La antibodies, which can affect the baby's heart rhythm later in pregnancy.

So, can lupus cause miscarriage?

The honest answer is: it can contribute, and the risk is higher than in women without lupus, but it is not a certainty. Studies show higher rates of early pregnancy loss, stillbirth, premature birth and slow baby growth in women with lupus. The risk is greatest when:

• lupus is active at conception or becomes active during pregnancy,
• there is active kidney disease or protein in the urine,
• blood pressure is high,
• antiphospholipid antibodies or antiphospholipid syndrome (APS) are present,
• the woman has had pregnancy losses before,
• medicines that harm the baby are being taken at conception.

The reverse is also true. When lupus is controlled, kidneys are healthy, blood pressure is normal, and the right medicines are used, many women carry their pregnancies to term. The word "high-risk" does not mean "unlikely to succeed". It means the pregnancy needs a closer watch, which is why we manage such women under our high-risk pregnancy care programme.

Antiphospholipid syndrome: the link doctors look for first

Many pregnancy losses in women with lupus are linked to APS rather than to lupus itself. The tests are the lupus anticoagulant, anticardiolipin antibodies and anti-beta-2 glycoprotein I antibodies. A diagnosis needs a positive result on two tests at least 12 weeks apart, together with a history of clots or pregnancy complications. APS is one of the few treatable causes of repeated miscarriage. In pregnancy, treatment usually includes low-dose aspirin and, in many cases, a blood thinner injection (heparin), decided and monitored by your doctor. Do not start or stop these on your own.

If you have had two or more miscarriages, or one loss after 10 weeks, you should be tested for antiphospholipid antibodies, even if you do not have lupus. See our guides on recurrent pregnancy loss and immune-related pregnancy loss.

Autoimmune miscarriage: what are the symptoms?

Many women ask for "autoimmune miscarriage symptoms". The truth is that the immune cause itself usually has no special symptoms. A miscarriage looks the same whatever the cause: vaginal bleeding, lower abdominal cramps, passing tissue or loss of pregnancy symptoms. The clue is the pattern: repeated losses, a loss after 10 weeks, a stillbirth, or a baby who was born very early because of high blood pressure or poor growth. If you also have lupus signs (joint pain, a rash across the cheeks, mouth ulcers, fever, hair loss, sun-sensitive skin), tell your doctor.

Planning a pregnancy with lupus: the step-by-step approach

1. Wait for a quiet phase

Guidelines suggest trying to conceive when lupus has been inactive or very mild for about six months. Use reliable contraception until then.

2. Have a pre-pregnancy visit

See your rheumatologist and an obstetrician before you try. Tests usually include a full blood count, kidney function, urine protein, complement levels (C3 and C4), anti-dsDNA, antiphospholipid antibodies, anti-Ro and anti-La antibodies, thyroid tests and blood pressure.

3. Review your medicines

Some medicines for lupus are compatible with pregnancy, and some are not. In general:

Group	Examples	In pregnancy
Usually continued	Hydroxychloroquine	Guidelines advise continuing it, because stopping increases the chance of a flare.
Often allowed	Azathioprine, tacrolimus, low-dose prednisolone, sulfasalazine	Used at the lowest effective dose under supervision.
Usually stopped before pregnancy	Mycophenolate, cyclophosphamide, methotrexate, leflunomide	These can harm the baby and need to be replaced well before conception.
Need a change	ACE inhibitors and ARBs (blood pressure), warfarin (blood thinner)	Your doctor will switch to safer options.
Use with care	Painkillers such as ibuprofen and other NSAIDs	Avoid unless advised, especially later in pregnancy.

Please do not stop or change any medicine on your own. A sudden stop can trigger a flare, which is a bigger risk to the baby than most of the medicines.

4. Start folic acid and vitamin D as advised

Folic acid is advised for all women planning pregnancy. Some women with lupus need vitamin D and calcium, especially if they have taken steroids for long.

Care during pregnancy

• Shared care. Visits with both your obstetrician and rheumatologist, often every two to four weeks.
• Regular checks. Blood pressure, urine protein, blood counts, kidney tests, and lupus activity markers.
• Low-dose aspirin. Often advised from early pregnancy to lower the risk of pre-eclampsia, as your doctor decides.
• Heparin injections if you have APS or a history of clots.
• Growth and Doppler scans. Extra scans from the second trimester to check the baby's growth and placental blood flow. Our fetal medicine and radiology unit does detailed scans.
• Heart rhythm checks. If you are anti-Ro or anti-La positive, the baby's heart is monitored between about 16 and 26 weeks.
• Delivery planning. The timing and mode of delivery depend on your health and the baby's. Delivery should happen at a hospital that has a newborn unit.
• After the birth. Lupus can flare after delivery, so follow-up continues. Breastfeeding is possible with many lupus medicines, but check each one with your doctor.

What if you need fertility treatment?

Women with lupus can have infertility for the same reasons as anyone else, and sometimes because of earlier treatment such as cyclophosphamide. Fertility treatment can be done safely only when lupus is quiet. IVF stimulation raises oestrogen levels, which can increase the risk of clots (especially with antiphospholipid antibodies) and may trigger flares, so blood thinners and a rheumatologist's input are part of the plan. Our team at the IVF centre in Gurgaon plans these cycles with your rheumatologist.

Warning signs: when to call your doctor today

• Vaginal bleeding, passing tissue, or severe lower abdominal pain.
• Less movement from the baby after about 28 weeks.
• New swelling of the face, hands or feet, a severe headache, blurred vision, or pain under the ribs. These can be signs of pre-eclampsia.
• A new rash, joint swelling, fever, mouth ulcers or foamy urine, which can signal a lupus flare.
• Leg swelling or chest pain, or sudden breathlessness (possible clot). Seek emergency care.

Emotional support matters

Worry about a pregnancy with lupus is natural, and a past miscarriage makes it heavier. Talk to your doctors about your fears, bring your partner to visits, and ask about counselling. Most women do better when they feel informed and supported.

Frequently asked questions

1. Can lupus cause miscarriage?

Yes, it can raise the risk, especially when the disease is active, the kidneys are involved, blood pressure is high or antiphospholipid antibodies are present. Many women with lupus still have healthy pregnancies.

2. Is it safe to get pregnant with lupus?

It is possible and often successful when lupus has been quiet for about six months, and your medicines are pregnancy-compatible. Plan with your rheumatologist and obstetrician.

3. Should I stop my lupus medicine when I am pregnant?

No, not on your own. Hydroxychloroquine is usually continued. Some medicines must be changed before pregnancy, so review them with your doctor in advance.

4. What is APS, and how is it related to lupus?

Antiphospholipid syndrome is a clotting disorder caused by antiphospholipid antibodies. It can occur with lupus or alone, and it is a treatable cause of repeated miscarriage.

5. How is antiphospholipid syndrome treated in pregnancy?

Usually with low-dose aspirin and, when indicated, heparin injections, with close monitoring. The plan is set by your doctor.

6. Will my baby have lupus?

Lupus itself is not passed on in a simple way. A small number of babies of anti-Ro or anti-La positive mothers develop neonatal lupus, which is usually temporary, though heart block needs monitoring. Your baby's heart will be checked.

7. Can lupus cause infertility?

Lupus itself does not usually cause infertility, but active disease, kidney problems or some treatments can affect fertility. Fertility options are available if you need them.

8. How many miscarriages should lead to autoimmune testing?

Two or more, or one loss after 10 weeks. Testing is advised even without a lupus diagnosis.

9. Can I breastfeed if I have lupus?

Often yes. Many lupus medicines are compatible with breastfeeding, but each one should be checked by your doctor.

10. Which hospital should I choose for a lupus pregnancy?

Choose a hospital with obstetricians who manage high-risk pregnancy, access to a rheumatologist, detailed ultrasound and a newborn unit on site.

Plan your pregnancy with our team

If you have lupus or a history of miscarriage, early planning is the most useful step. Want to speak to a specialist? Book a consultation with our obstetrician and gynaecologist in Gurgaon. You can also call or WhatsApp +91-9971239503, or read about our maternity hospital in Gurgaon.