Trichomoniasis vs Atrophic Vaginitis
Trichomoniasis and Atrophic Vaginitis are easy to mix up on the boards. Here's a side-by-side comparison — presentation, workup, imaging, and first-line treatment — drawn from our full outlines.
Trichomoniasis vs Atrophic Vaginitis at a glance
- Trichomoniasis: Sexually transmitted protozoal infection — frothy yellow-green discharge, strawberry cervix; treat patient and partners.
- Atrophic Vaginitis: Hypoestrogenic atrophy of vulvovaginal and lower urinary tract tissues.
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Side-by-side comparison
| Feature | Trichomoniasis | Atrophic Vaginitis |
|---|---|---|
| At a glance | Sexually transmitted protozoal infection — frothy yellow-green discharge, strawberry cervix; treat patient and partners. | Hypoestrogenic atrophy of vulvovaginal and lower urinary tract tissues. |
| Classic presentation | Sexually active woman with frothy malodorous discharge, vulvar pruritus, and strawberry cervix on colposcopy or speculum exam.; Frothy, malodorous… | Vulvovaginal: dryness, burning, irritation, dyspareunia, postcoital bleeding, loss of lubrication; Urinary: urgency, dysuria, recurrent UTI, urinary… |
| Workup / key labs | NAAT (nucleic acid amplification test) — preferred; high sensitivity/specificity; Wet mount microscopy — motile, pear-shaped flagellated trichomonads (~50-70%… | Clinical — typical symptoms and exam findings in a hypoestrogenic patient, with exclusion of infection and dermatoses. Biopsy any suspicious lesion.; Wet… |
| Imaging | — | Not routinely needed |
| First-line treatment | Women: metronidazole 500 mg PO BID × 7 days (CDC 2021 — replaced single 2 g dose for women based on trial data showing lower recurrence with 7-day regimen);… | Non-hormonal: long-acting vaginal moisturizers (e.g., polycarbophil/Replens) 2-3x weekly, water- or silicone-based lubricants with intercourse; Continued… |
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