05/12/2025
🫄Why Pregnancy Is *Not Recommended* When Is Active
places major stress on the heart, lungs, kidneys, and immune system.
For women with active systemic sclerosis, this can greatly worsen the disease and increase danger for both mother and baby.
1) High risk of Scleroderma Renal Crisis (SRC)
SRC is one of the most life-threatening complications of SSc.
* Pregnancy increases blood pressure and vascular stress → can trigger SRC.
* Treatment for SRC (ACE inhibitors such as captopril) is **teratogenic** and can cause fetal death or renal failure.
* This means the mother may need life-saving medication that endangers the fetus.
📌 This combination makes active SSc pregnancy extremely dangerous.
2) Severe risks for the lungs — ILD & pulmonary hypertension (PAH)**
Women with ongoing ILD or pulmonary arterial hypertension face:
* High maternal mortality (PAH mortality in pregnancy reported up to *25–50%**).
* Risk of heart failure, respiratory failure, and preterm delivery.
* Pregnancy increases blood volume by 30–50%, worsening PAH and fibrotic lung disease.
📌 Most experts advise women with PAH to avoid pregnancy entirely.
3) Disease flare during pregnancy
If scleroderma is active, pregnancy can worsen :
* skin fibrosis
* Raynaud’s phenomenon
* digital ulcers
* internal organ involvement
Active disease often requires medications that cannot be used during pregnancy, such as :
* Mycophenolate mofetil (MMF)
* Methotrexate
* Cyclophosphamide
Thus, treatment becomes limited and unsafe for the baby.
4) High risk for the fetus
Poor blood flow and maternal organ involvement increase the risk of :
* intrauterine growth restriction (IUGR)
* miscarriage
* preterm birth
* stillbirth
* low birth weight
5) Pregnancy may mask early signs of serious complications
Typical pregnancy symptoms (swelling, fatigue, high blood pressure) can mimic :
* early renal crisis
* cardiac involvement
* pulmonary hypertension exacerbation
This may delay diagnosis and reduce survival.
✔️ Consensus Medical Recommendation
Most guidelines advise:
Only attempt pregnancy when Scleroderma is stable for at least 12–24 months and there is no progressive lung, kidney, or heart involvement.
📚 Reference (Peer-Reviewed & Guideline-Based)
1. EULAR Recommendations for Women’s Health and Pregnancy in Rheumatic Diseases (2023).
– Includes detailed guidance for Scleroderma and pregnancy safety.
2. Steen VD, Medsger TA. Systemic sclerosis and pregnancy. Rheum Dis Clin North Am. 2007.
– Classic review on maternal and fetal risks in SSc.
3. Chung L. Scleroderma renal crisis: review and recent updates. Curr Opin Rheumatol. 2013.
– Explains danger of SRC and medication limitations during pregnancy.
4. Barnes J, et al. PAH in pregnancy: maternal mortality remains high. Eur Respir Rev. 2020.
– Documents extremely high mortality for pregnant PAH patients.
5. Pattison J, et al. Outcome of pregnancy in systemic sclerosis. J Rheumatol. 1998.
– Shows increased risk of miscarriage, IUGR, and preterm birth.
6. American College of Rheumatology (ACR) Guideline on Reproductive Health in Rheumatic Diseases (2020).
– Advises pregnancy only when SSc is stable and organ involvement minimal.