is a general term that refers to pathology involving the external genitalia of a woman. The different types of vulvar disease range from infectious to inflammatory and finally to pre-cancerous. Persistent vulvar symptoms such as itching and burning can be a sign of a more serious problem. Vulvar dystrophies are characterized by a change in the skin of the vulva.  This skin can become either abnormally thick (squamous cell hyperplasia) or too thin like cigarette paper (lichen sclerosis).  Moreover, precancerous changes (vulvar intraepithelial neoplasia or VIN) can also present in this way. Painful sexual intercourse is the hallmark symptom of women with vestibulitis.  Accurate diagnosis and effective therapy can restore normal sexual function.  Finally, many women experience a chronic burning sensation of the vulva with no obvious abnormality found during examination.  These women require an experienced clinician’s approach to the diagnosis and treatment of vulvodynia. 

The following article is a wonderful detailed description of the different types of vulvar diseases.