Vaginal Discharge: Normal Cyclic Changes vs. Concerning Signs
Clear/whitish, stretchy (spinnbarkeit), odorless discharge on a tampon or underwear is typically cervical mucus reflecting hormonal status.
Normal Cyclic Pattern
- Follicular phase (post-menses): Scant, thick, cloudy (low estrogen).
- Peri-ovulation (peak estrogen): Abundant, clear, stretchy (egg-white), high spinnbarkeit (>5 cm) – facilitates sperm transport.
- Luteal phase (progesterone dominant): Thicker, whiter, less stretchy, lower volume.
- Premenstrual: May be slightly yellowish; minimal.
Other Benign Causes
- Arousal fluid: Transudate from vaginal walls (vasocongestion); clear, slippery.
- Seminal fluid: Post-intercourse; may persist hours.
- Endometrial tissue fragments: At menses onset/end; small clots/membrane.
When to Seek Evaluation
- Color: yellow-green, gray, bloody (outside period).
- Odor: fishy (BV), yeasty (candidiasis), foul (trichomonas, PID).
- Consistency: cottage cheese (yeast), frothy (trichomonas).
- Symptoms: pruritus, burning, dysuria, dyspareunia, pelvic pain, fever.
- Postmenopausal: any new discharge (atrophic vs. pathologic).
Common Pathologies
| Condition | Discharge | Key Features |
|---|---|---|
| Bacterial vaginosis | Thin, gray-white, fishy odor | Clue cells, pH >4.5, Whiff test + |
| Vulvovaginal candidiasis | Thick, white, curdy | Intense itch, erythema, hyphae on KOH |
| Trichomoniasis | Frothy, yellow-green | Strawberry cervix, motile trichomonads |
| Chlamydia/Gonorrhea | Mucopurulent, often asymptomatic | NAAT positive; PID risk |
| Atrophic vaginitis | Scant, watery, blood-tinged | Low estrogen; pH >5 |