What are the causes and treatments of vaginal circumferential ulcers?

Behçet's Disease: This condition is known for causing mucocutaneous lesions, including genital ulcers, which can be deep and circumferential. The presence of such ulcers, especially if accompanied by oral ulcers and other systemic symptoms, makes Behçet's Disease a strong consideration.

Genital Herpes: Caused by the herpes simplex virus (HSV), this infection can lead to painful ulcers in the genital area, including the vagina. The ulcers can coalesce to form larger, circumferential lesions.
Syphilis: The primary stage of syphilis is characterized by a chancre, which is typically a single, painless ulcer. However, in some cases, especially if left untreated, syphilis can cause multiple or large ulcers that might appear circumferential.
Lichen Planus: This chronic inflammatory condition can affect the mucous membranes, including the vagina, leading to erosive lesions that might appear as circumferential ulcers.

Squamous Cell Carcinoma: Although less common, vaginal cancer can present with ulcers. It's crucial to rule out malignancy, especially in postmenopausal women or those with risk factors such as HPV infection.
Lymphogranuloma Venereum (LGV): This sexually transmitted infection, caused by certain strains of Chlamydia trachomatis, can lead to genital ulcers, among other symptoms. It's essential to consider LGV due to its potential for serious complications if not treated promptly.

Crohn's Disease: Although more commonly associated with gastrointestinal symptoms, Crohn's Disease can cause perianal and, rarely, vaginal ulcers due to its ability to affect any part of the gastrointestinal tract and sometimes the genitourinary system.
Vulvar Intraepithelial Neoplasia (VIN): This precancerous condition can cause lesions that might ulcerate. While not typically circumferential, in rare cases, VIN could present with ulcerative features that need to be differentiated from other causes.