Differential Diagnosis for Vaginal Blister Painful
- Single most likely diagnosis
- Genital Herpes: This is the most likely diagnosis due to the presence of a painful vaginal blister, which is a classic symptom of genital herpes, a common sexually transmitted infection caused by the herpes simplex virus.
- Other Likely diagnoses
- Bartholin's Cyst or Abscess: A painful blister or bump in the vaginal area could be a Bartholin's cyst or abscess, which occurs when the Bartholin's gland becomes blocked and infected.
- Vaginal Cyst: A vaginal cyst can cause a painful blister-like sensation and is usually a benign growth that can be filled with fluid or semi-solid material.
- Folliculitis: This is an inflammation of the hair follicles, which can cause painful blisters or bumps in the vaginal area, often due to bacterial or fungal infections.
- Do Not Miss (ddxs that may not be likely, but would be deadly if missed.)
- Necrotizing Fasciitis: Although rare, this is a life-threatening condition that can cause severe pain, blisters, and necrosis of the skin and underlying tissues. Early diagnosis and treatment are crucial to prevent mortality.
- Toxic Shock Syndrome: This is a rare but potentially fatal condition that can cause symptoms including fever, rash, skin peeling, and blisters, often associated with bacterial infections such as Staphylococcus aureus.
- Rare diagnoses
- Aphthous Ulcers: Also known as Lipschütz ulcers, these are rare, painful ulcers that can appear in the vaginal area, often associated with viral infections or other underlying conditions.
- Behçet's Disease: This is a rare autoimmune disorder that can cause a range of symptoms, including painful genital ulcers and blisters.
- Fixed Drug Eruption: This is a rare condition where a medication causes a skin reaction, resulting in a painful blister or ulcer, which can occur in the vaginal area.