Differential Diagnosis for Itchiness on Labia

• Single most likely diagnosis
  • Eczema/Dermatitis: This is a common condition that can cause itchiness on the labia due to skin irritation or allergic reactions. It's often seen in individuals with a history of atopic diseases.
• Other Likely diagnoses
  • Vulvovaginal Candidiasis (Yeast Infection): A fungal infection that can cause intense itching, redness, and swelling in the vulvar area, including the labia.
  • Contact Dermatitis: An allergic reaction or irritation from soaps, douches, or other products used in the genital area, leading to itchiness and discomfort.
  • Lichen Sclerosus: A chronic skin condition that can cause itching, pain, and thinning of the skin on the labia and other parts of the vulva.
• Do Not Miss (ddxs that may not be likely, but would be deadly if missed.)
  • Malignancy (Vulvar Cancer): Although rare, vulvar cancer can present with persistent itching, and it's crucial to rule out this diagnosis to ensure timely treatment.
  • Herpes Simplex Virus (HSV): Genital herpes can cause itching, along with painful blisters or sores, and has significant implications for sexual health and relationships.
  • Syphilis: A sexually transmitted infection that can cause a variety of symptoms, including itching in the genital area, and has serious consequences if left untreated.
• Rare diagnoses
  • Lichen Planus: An autoimmune condition that can affect the skin and mucous membranes, including the vulva, causing itching and discomfort.
  • Psoriasis: Although more commonly associated with skin lesions elsewhere on the body, psoriasis can occasionally affect the vulvar area, leading to itching and redness.
  • Keratosis Pilaris: A condition characterized by rough patches on the skin, which can sometimes occur on the labia and cause itching.