Syphilis in Pregnancy
Clinical detail
Additional detail checked 2026-10-17 against the linked sources. This check covers the section below; the rest of the module retains its displayed verification status.
Syphilis management in pregnancy requires a documented disease stage, adequate penicillin treatment and coordinated maternal–newborn follow-up. A positive screening result must be interpreted alongside confirmatory tests and prior treatment records.
Assessment & interpretation
- Record the quantitative nontreponemal titre, confirmatory treponemal result, symptoms, previous titres and any evidence of adequately completed therapy.
- Assess for HIV and organise partner evaluation. Diagnosis in the second half of pregnancy also requires fetal assessment without delaying treatment.
Decisions that change management
- Penicillin is the established treatment that treats fetal infection and prevents congenital syphilis. Use the regimen for the confirmed stage; a penicillin-allergic pregnant patient needs desensitisation and penicillin.
- For a weekly late-latent course, an interval above 9 days is unacceptable in pregnancy and requires restarting the full course.
Follow-up & safety-netting
- After treatment at or before 24 weeks, repeat titres no earlier than 8 weeks later unless failure or reinfection is suspected, and repeat at delivery. After later treatment, repeat at delivery.
- Counsel about fever, contractions or reduced movements after treatment and the need for obstetric review.
Clinical pitfalls
- Failure to achieve a fourfold titre decline before birth does not by itself prove treatment failure.
Admission & discharge
Admission/discharge guidance checked 2026-10-18 against the linked sources. This is a clinical checklist for an individual decision, not an automatic discharge order.
When admission or continued hospital care is needed
- Neurological/ocular/otic disease, severe systemic illness or a maternal/fetal complication needs urgent specialist assessment and possible admission/IV treatment.
When clinic, day care or home care may be suitable
- Uncomplicated syphilis can be treated through a specialist antenatal/STI service with reliable attendance for all required doses.
Before going home
- Treatment appropriate to stage/pregnancy is given or fully arranged, allergy/penicillin needs are addressed and the follow-up/partner plan is documented.
- The neonatal team has maternal stage, serology, treatment dates/completeness and the infant assessment plan.
Discharge medicines and treatment changes
- Use only the correct penicillin formulation and stage-specific course. Missed weekly doses in pregnancy can require restarting the course; do not simply omit a missed dose.
Medicine doses — use only when indicated
Use the medicines selected for this patient. Listed alternatives are not instructions to prescribe all of them together. Confirm the actual remaining course, pregnancy/postnatal context and monitoring plan.
Only for the documented early-stage indication.
- Indication: Primary, secondary or early latent syphilis after staging
- Confirm the exact penicillin salt/product. Bicillin L-A is not Bicillin C-R and is not aqueous crystalline penicillin.
- Allergy/anaphylaxis readiness; injection-site/vascular safety; warn about Jarisch–Herxheimer reaction and fetal symptoms; stage-appropriate maternal titres and neonatal planning
Alternative stage-specific course; not given in addition to the early-stage course.
- Indication: Late latent syphilis or unknown duration without neurosyphilis
- Confirm the exact penicillin salt/product. Bicillin L-A is not Bicillin C-R and is not aqueous crystalline penicillin.
- Allergy/anaphylaxis readiness; injection-site/vascular safety; warn about Jarisch–Herxheimer reaction and fetal symptoms; stage-appropriate maternal titres and neonatal planning
Tests, pending results and their reviewer
- Document baseline and follow-up nontreponemal titres with the specialist service; track treatment and repeat-testing dates and infant results.
Home care and counselling
- Explain treatment attendance, partner evaluation/treatment, reinfection prevention and symptoms after treatment that need review.
Follow-up: when and what to review
| When | Action / responsible service |
|---|---|
At every required treatment dose and serology appointment | Confirm completion and assess reinfection/treatment response. |
Before birth and newborn discharge | Ensure maternal records and the infant’s investigation/treatment follow-up are available to the neonatal team. |
Return urgently
- Neurological/visual symptoms, severe illness, contractions/reduced movements after treatment or an unwell newborn requires urgent assessment.
Treatment
① Immediate stabilization — first minutes
③ First-line treatment & drug regimens
Stage syphilis and assess neurological/ocular/otic symptoms before choosing the penicillin product. Benzathine IM and aqueous IV benzylpenicillin are not interchangeable. Pregnancy with true penicillin allergy requires desensitisation. Link maternal treatment dates, partner care and neonatal assessment.
④ Drug treatment detail (3 agents)
- Indication: Primary, secondary or early latent syphilis after staging
- Confirm the exact penicillin salt/product. Bicillin L-A is not Bicillin C-R and is not aqueous crystalline penicillin.
- Allergy/anaphylaxis readiness; injection-site/vascular safety; warn about Jarisch–Herxheimer reaction and fetal symptoms; stage-appropriate maternal titres and neonatal planning
- Indication: Late latent syphilis or unknown duration without neurosyphilis
- Confirm the exact penicillin salt/product. Bicillin L-A is not Bicillin C-R and is not aqueous crystalline penicillin.
- Allergy/anaphylaxis readiness; injection-site/vascular safety; warn about Jarisch–Herxheimer reaction and fetal symptoms; stage-appropriate maternal titres and neonatal planning
- Indication: Adult neurosyphilis, ocular or otosyphilis with specialist evaluation
- Dose from CDC; preparation from the registered benzylpenicillin sodium SmPC. Potassium and sodium formulations have different electrolyte loads.
- Clinical/neurological and ophthalmic/otic assessment, renal function, electrolytes, allergy and treatment completion
Monitoring
- Quantitative titres at 8 wks then monthly-ish; 4-fold fall expected
- Serofast states reviewed by specialist
- Partner(s) treated; congenital-syphilis evaluation at birth
⑮ Complications & their management
Congenital syphilis
Arrange neonatal evaluation and a complete paediatric prescription: treatment depends on maternal therapy, infant findings, investigations and age. A fixed every-12-hour schedule for all ten days is incorrect once the infant is older than seven days; use the current CDC congenital-syphilis pathway.
Post-treatment care
- Repeat serology postpartum per programme; STI co-screening (HIV etc.)
Diagnosis & assessment
- Haemodynamic instability -> sepsis pathway
Initial assessment
See treatment table for testing and regimens.
Principles & follow-up
Management principles
Sources (9)
2021-07 · updated 2025-12-22 (page review; guidance itself unchanged) · checked 2026-08-23 · verified-live
Open source ↗
CDC pages + wall chart: uncomplicated gonorrhoea cervix/urethra/rectum → ceftriaxone 500 mg IM single dose (<150 kg; 1 g if ≥150 kg); pharyngeal same; conjunctivitis 1 g IM; DGI 1 g IV/IM q24h; PID outpatient → ceftriaxone 500 mg IM ×1 + doxycycline 100 BD ×14 d + metronidazole 500 BD ×14 d; chlamyd…
· checked 2026-10-18 · verified-live
Open source ↗
Scope: additional clinical-detail explanation for sti-syphilis. Checked the assessment, management-decision and follow-up statements in that section against this source. This does not certify all pre-existing regimens, calculations or recommendations in the module. Additional admission/discharge che…
· checked 2026-10-17 · verified-live
Open source ↗
Stage-specific benzathine penicillin: early 2.4 million units IM with optional pregnancy second dose one week later; late/unknown weekly three-dose course; >9-day interval in pregnancy restarts course, desensitisation and neonatal planning. Bicillin L-A prefilled product identity/deep-IM-only warnin…
· checked 2026-10-17 · verified-live
Open source ↗
18–24 million units/day IV, 3–4 million every four hours or continuous, for 10–14 days; pregnancy penicillin desensitisation. Preparation of the selected 4-million-unit/2.4-g sodium dose cross-checked against the registered 1.2-g vial SmPC, https://www.medicines.org.uk/emc/product/102025/smpc .
· checked 2026-10-18 · verified-live
Open source ↗
Maternal/newborn transfer assessment, first void and effective feeding, handover, support/safeguarding, first midwife visit within 36 hours after transfer, postnatal danger symptoms. Full recommendations page read.
· checked 2026-10-18 · verified-live
Open source ↗
Normal-delivery discharge not less than 48 hours: full primary SOP PDF normal-delivery/discharge passages read. Corroborated by NHM CEmONC 2024 Part 1, chapter 8. This does not define a universal post-caesarean or complicated-case stay.
· checked 2026-10-18 · verified-live
Open source ↗
Official WHO summary read: at least 24-hour facility care after birth; additional contacts at 48–72 hours, 7–14 days and week 6; individual assessment/support. Summary facts only, not a claim that the full 242-page PDF was reviewed.
· checked 2026-10-18 · verified-live
Open source ↗
Full primary patient recovery page read: pain control, wounds, activity/VTE, urinary/bowel and infection warning signs, adult support and no driving/important decisions during the first 24 hours after general anaesthesia. Used as general recovery/handover principles, not operation-specific discharge…
· checked 2026-10-18 · verified-live
Open source ↗
Full primary recommendations read, focusing on critical-care-to-ward transfer: structured written handover, shared plan, monitoring, rehabilitation and receiving-team capability. Step-down is distinct from home discharge; no universal organ-support discharge cutoff is asserted.