Yeast Infections in Pregnancy: Causes, Symptoms & Safe Treatment

Vulvovaginal candidiasis (VVC) is common in pregnancy (↑ estrogen → glycogen → Candida growth).

Symptoms

  • Vulvar/vaginal pruritus, burning
  • Thick, white, curdy discharge (cottage cheese)
  • Dyspareunia, dysuria
  • Erythema, edema, fissures

Diagnosis

  • Clinical + KOH prep (pseudohyphae) or culture.
  • Rule out BV, trichomonas, HSV, contact dermatitis.

Safe Treatment in Pregnancy

Prevention

  • Cotton underwear, loose clothing.
  • Avoid douching, scented products.
  • Probiotics (oral Lactobacillus rhamnosus GR-1/RC-14) — evidence emerging.
  • Glycemic control (diabetes).

When to See OB/GYN

  • First episode in pregnancy (confirm diagnosis).
  • Recurrent (≥4/yr) — evaluate for diabetes, immune issues.
  • Symptoms persist after treatment.
  • Fever, pelvic pain, foul discharge (possible co-infection).

Untreated VVC → chorioamnionitis risk (rare). Treat promptly with topical azole.

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AgentRegimenSafety
Topical azoles (clotrimazole, miconazole, terconazole)7-day intravaginal courseCategory B; minimal absorption. Preferred.
Oral fluconazoleSingle 150 mg (sometimes repeated)Avoid in 1st trimester (teratogenicity risk: tetralogy of Fallot, craniofacial). 2nd/3rd trimester: single dose likely safe but topical preferred.
Boric acid600 mg intravaginal × 14 daysContraindicated in pregnancy (teratogenic in animals).