Rheumatoid Arthritis and Pregnancy: Managing RA Safely Before and During Pregnancy

Rheumatoid Arthritis and Pregnancy

Rheumatoid arthritis (RA) affects women 3x more often than men, with peak onset during childbearing years. Managing RA during pregnancy requires careful planning, as both uncontrolled disease activity and certain medications can affect pregnancy outcomes.

How Pregnancy Affects RA

The good news: Approximately 50-75% of women with RA experience significant improvement or remission during pregnancy, particularly in the second and third trimesters. This is thought to be related to immune tolerance mechanisms that prevent the mother's immune system from attacking the fetus.

The challenge: Most women experience a postpartum flare — often within 3-6 months of delivery — as immune suppression is lifted.

Planning Pregnancy with RA

Timing matters: Aim to conceive when RA is well-controlled. Active disease at conception is associated with preterm birth, low birth weight, and increased risk of cesarean delivery.

Medication review: Review all medications with your rheumatologist 3-6 months before trying to conceive. Some medications require washout periods.

Medications: Safety in Pregnancy

Generally considered safe:

• Hydroxychloroquine (Plaquenil) — safe throughout pregnancy; may actually reduce risk of preterm birth
• Sulfasalazine — safe in pregnancy (take with folic acid)
• Low-dose prednisone — used when needed; higher doses increase risk of gestational diabetes and cleft palate
• TNF inhibitors (adalimumab, etanercept, certolizumab) — generally considered safe in first and second trimester; certolizumab has the least placental transfer

Avoid during pregnancy:

• Methotrexate — teratogenic; must stop at least 3 months before conception
• Leflunomide — teratogenic; requires washout procedure
• JAK inhibitors — insufficient safety data; avoid
• Mycophenolate — teratogenic

During Pregnancy

• Continue safe medications to maintain disease control
• Uncontrolled inflammation is more harmful to the fetus than most RA medications
• Monitor for pregnancy complications (preeclampsia risk is slightly elevated)
• Coordinate care between rheumatologist and obstetrician

Postpartum Considerations

• Most women flare within 3-6 months postpartum
• Have a medication plan ready before delivery
• Breastfeeding: hydroxychloroquine and certolizumab are compatible; methotrexate and leflunomide are not
• Fatigue from RA flare + newborn care can be overwhelming — plan for support

Medical Disclaimer

Pregnancy with RA requires coordinated care between a rheumatologist and obstetrician. Do not change medications during pregnancy without medical supervision.