Differential Diagnosis for Itchy Red Vulva
- Single most likely diagnosis
- Vulvar dermatitis (also known as eczema): This is the most common cause of an itchy red vulva, often resulting from irritants, allergens, or skin conditions like atopic dermatitis. The symptoms can include intense itching, redness, and sometimes small bumps or blisters.
- Other Likely diagnoses
- Yeast infection (candidiasis): Characterized by itching, redness, and a white discharge. It's a common condition, especially in women who are pregnant, have diabetes, or use antibiotics.
- Bacterial vaginosis: Although it primarily causes an abnormal vaginal discharge, it can also lead to vulvar itching and redness.
- Vulvovaginal lichen planus: An inflammatory condition that can cause itching, redness, and sometimes pain in the vulvar area.
- Contact dermatitis: An allergic reaction or irritation from soaps, douches, or other products can cause vulvar itching and redness.
- Do Not Miss (ddxs that may not be likely, but would be deadly if missed)
- Vulvar intraepithelial neoplasia (VIN) or vulvar cancer: Although rare, these conditions can present with itching and redness. Early detection is crucial for effective treatment.
- Herpes simplex virus (HSV): Can cause painful blisters and ulcers, but in some cases, may present with itching and redness before the onset of visible lesions.
- Syphilis: The primary stage can manifest as a single, painless chancre, but in some cases, it may cause itching and redness.
- Rare diagnoses
- Lichen sclerosus: A condition that causes thinning and patchy skin which can appear white, and may lead to itching and discomfort.
- Psoriasis: Although more commonly found on other parts of the body, psoriasis can occasionally affect the vulva, causing redness and itching.
- Vulvar Crohn's disease: A rare condition where Crohn's disease affects the vulvar area, leading to itching, redness, and sometimes fistulas or abscesses.