Swollen Vagina: Causes, Treatment, and When to See a Doctor

• Swelling from arousal, the days before your period, or pregnancy is normal and settles on its own.
• Abnormal swelling usually comes with pain, itching, redness, abnormal discharge, sores, or an odour.
• The most common treatable causes are yeast infection, contact dermatitis (often from scented products), and Bartholin cysts.
• Mild swelling often eases with cool compresses, loose cotton underwear, and stopping all scented intimate products.
• Seek urgent care for swelling with breathing difficulty, high fever with spreading redness, a large painful abscess, or after assault.

Not all vulval swelling is a problem. Sexual arousal causes the labia, clitoris, and vaginal walls to fill with blood, so they swell, feel warm, and grow more lubricated. This is a healthy response that fades within an hour or two. Some women mistake this normal arousal change for something wrong.

Hormones also play a part. In the days before your period, mild vulval fullness is common and clears once bleeding starts. During pregnancy, increased pelvic blood flow keeps the vulva fuller and softer throughout, which is normal. After a vaginal delivery, swelling in the first one to two weeks is expected and settles gradually as part of perineal healing.

Abnormal swelling usually announces itself with extra symptoms: pain beyond mild discomfort, itching, burning, redness spreading past the usual areas, abnormal discharge, ulcers or blisters, fever, a foul odour, urinary symptoms, or a clear recent trigger such as a new product, sexual contact, an injury, or an allergy. The distinction matters because normal swelling needs no treatment, while abnormal swelling needs its cause found and addressed.

• Intense itching with swelling and redness
• Thick, white, curd-like ('cottage cheese') discharge
• Burning as urine passes over inflamed skin
• Pain or discomfort during sex

Bacterial vaginosis (BV) is an overgrowth of anaerobic bacteria that crowds out the protective lactobacilli of a healthy vagina. It usually causes a thin grey-white discharge with a fishy odour that is stronger after sex, plus some itching and mild irritation. Marked swelling is less typical than with yeast but can happen. Diagnosis combines symptoms, a vaginal pH above 4.5, a positive whiff test, and clue cells on microscopy. Treatment is metronidazole (oral 500 mg twice daily for seven days, or a vaginal gel — Flagyl, Metrogyl, ₹50–600) or clindamycin. Recurrent BV is common and may need longer courses.

Trichomoniasis is a sexually transmitted infection caused by the protozoan Trichomonas vaginalis. It produces a frothy yellow-green discharge, redness and swelling of the vulva and vagina, pain with sex, and burning on urination. Treatment is metronidazole or tinidazole, and the partner must be treated too. Both BV and trichomoniasis raise the risk of catching other sexually transmitted infections, including HIV, and of pregnancy complications such as preterm birth. NACO STI clinics screen and treat free of charge; private NAAT testing runs about ₹800–2,500.

Contact dermatitis is one of the most common non-infectious causes of a swollen, irritated vulva. Vulval skin is thin and well supplied with blood, so it reacts easily to products. Frequent culprits include scented soaps and shower gels, perfumed feminine washes (heavily marketed in India but unnecessary), leftover shampoo or conditioner, laundry detergent on underwear, fragranced or gel sanitary pads, daily panty liners, wet wipes, depilatory creams, douches, and lubricants containing parabens, glycerin, or perfume.

Symptoms — redness, swelling, itching, burning, sometimes tiny blisters or weeping — usually start within one to 48 hours of exposure and improve once the trigger is removed. Treatment is mostly about identifying and stopping the irritant, plus cool compresses, plain-water washing or sitz baths, loose cotton underwear, and a short few-day course of topical hydrocortisone 1% for relief. Persistent or severe dermatitis warrants dermatology referral and patch testing.

Two specific allergies are worth naming. A latex allergy to condoms causes localised swelling, itching, and burning, and switching to polyurethane or polyisoprene condoms prevents it. Semen allergy is rare but real, causing swelling and burning after unprotected sex; barrier protection prevents symptoms and an allergist can confirm it.

Genital herpes (HSV-1 or HSV-2) classically begins with a tingling or burning warning, then grouped blisters on a red base appear on the vulva, vagina, perineum, or buttocks within a day or two. The blisters ulcerate, crust, and heal over one to three weeks. First episodes often bring significant vulval swelling, fever, tender groin glands, and severe pain on urination — occasionally bad enough to cause urinary retention. Diagnosis is clinical plus PCR or culture from a fresh lesion. Treatment is an antiviral (aciclovir, valaciclovir, or famciclovir) — episodic for outbreaks, or daily suppression for frequent recurrences. A course costs roughly ₹150–500, with suppression around ₹300–800 a month.

Other STIs can also cause vulval swelling: syphilis (a usually painless chancre that may swell), lymphogranuloma venereum (groin swelling), and chancroid (painful ulcers). Unexplained severe vulvitis warrants a full STI screen, including HSV PCR, syphilis serology, chlamydia and gonorrhoea NAAT, and an HIV test. NACO STI clinics offer this free and confidentially; private panels cost about ₹2,000–6,000. If you find it hard to raise these symptoms, our guide to talking to a doctor about vaginal pain may help.

Swelling from injury ranges from minor sex-related friction to significant trauma needing emergency care. Vigorous sex without enough lubrication causes localised swelling and tenderness that usually settles in one to three days with gentle care, cool compresses, and rest from intercourse. If sex is frequently painful, it is worth investigating rather than enduring. Cycling on a hard saddle, horse riding, and contact sports can also bruise and swell the vulva. Childbirth causes marked swelling that eases over one to two weeks, and perineal tears or an episiotomy add to it.

Sexual assault can cause swelling, bruising, abrasions, and lacerations of the vulva, vagina, perineum, or anus. Survivors deserve immediate, non-judgmental care at a hospital emergency department or a designated one-stop crisis centre, which operate at major government hospitals across India. There, forensic examination, STI prophylaxis, emergency contraception, mental-health support, and police involvement (only with the survivor's consent) are coordinated. Our guide to sexual assault survivor care in India explains your choices and rights in detail.

A localised swelling at the vaginal opening (the 4 and 8 o'clock positions) is most often a Bartholin gland problem. A Bartholin cyst forms when the gland's duct blocks and mucus builds up. Small ones may cause nothing; larger ones make a visible, palpable lump that can interfere with sitting, walking, or sex. An infected Bartholin abscess is acutely tender, red, hot, and sometimes brings fever — it needs urgent drainage.

Treatment options range from incision and drainage (fast relief but high recurrence), to a Word catheter (a 4–6 week outpatient device, ₹2,000–5,000), marsupialisation (₹8,000–25,000), and gland excision for recurrent disease (₹15,000–60,000). A new Bartholin swelling in a woman over 40 is occasionally evaluated with biopsy to exclude malignancy.

Other localised lumps include sebaceous and epidermal cysts, vulval lipomas, folliculitis and ingrown pubic hairs, pimples and bumps on the labia, and hidradenitis suppurativa (chronic recurring nodules). Any hard, fixed, irregular, or rapidly growing swelling deserves prompt evaluation to rule out vulvar cancer.

Occasionally, sudden, generalised vulval swelling reflects a body-wide reaction that needs urgent care. Anaphylaxis — from a food, drug, or insect-sting allergy — can cause vulval angioedema alongside facial swelling, breathing difficulty, throat tightness, low blood pressure, and rash. This is an emergency that requires immediate adrenaline (epinephrine) and hospital care.

Hereditary angioedema is a rare genetic condition causing recurrent skin and mucosal swelling that can affect the vulva, lips, hands, and feet, sometimes with abdominal pain; it is diagnosed with C1 esterase inhibitor testing and has specific treatment. Severe drug reactions such as Stevens-Johnson syndrome can also involve the vulval mucosa and need emergency care.

Cellulitis — a bacterial skin infection spreading into deeper tissue — causes expanding redness, swelling, warmth, and pain, often with fever and feeling unwell, and needs prompt antibiotics. Recognising these urgent patterns and getting help quickly prevents serious complications.

• Apply cool compresses — a clean cloth in cool water or a covered ice pack for 10–15 minutes, a few times a day.
• Try sitz baths: sit in a shallow basin of warm water for 10–15 minutes, two to three times daily; plain warm water works as well as commercial solutions.
• Wear loose cotton underwear and loose clothing to cut friction and improve airflow; sleep without underwear when you can.
• Stop all scented products, douches, intimate washes, perfumed pads, and panty liners — the vulva is self-cleaning.
• Clean only the external area with plain water or a mild unscented cleanser; never wash inside the vagina.
• Dry the area thoroughly after bathing.
• Take paracetamol or ibuprofen at standard doses for pain.
• Avoid intercourse and tampons until symptoms settle.
• For a confirmed yeast infection, an over-the-counter antifungal is reasonable first-line treatment.
• For known contact dermatitis, remove the trigger and use short-course topical hydrocortisone 1%.

• Swelling that does not improve after 3–5 days of gentle self-care
• Recurrent swelling — more than three to four episodes a year
• Swelling with abnormal discharge, foul odour, or other signs of infection
• Persistent itching or irritation that over-the-counter measures do not help
• A palpable lump or mass, or deep pain during sex
• Any new swelling after menopause (warrants thorough evaluation, sometimes biopsy)
• EMERGENCY: rapidly spreading swelling with breathing difficulty, throat tightness, facial swelling, or low blood pressure (anaphylaxis)
• EMERGENCY: high fever with spreading redness (severe cellulitis or sepsis)
• EMERGENCY: a large, painful, fluctuant abscess needing urgent drainage
• EMERGENCY: signs of sexual assault, or significant bleeding from a vulval injury

• ACOG — Vulvovaginal Health
• NHS — Vaginal Thrush (Yeast Infection)
• NHS — Bartholin's Cyst
• WHO — Sexually Transmitted Infections (STIs))
• National AIDS Control Organisation (NACO), India — STI/RTI Services
• CDC — Bacterial Vaginosis (STI Treatment Guidelines)