[33F] With painless blister on inner labia post-trauma

What might be happening

Based on the information you have provided, here are some possible explanations for your painless blister:

• Friction Blister: Given the recent trauma from rough sexual intercourse, it's possible that the blister is a result of friction. Friction blisters are common and occur when the skin is rubbed repeatedly, causing fluid to collect under the skin.

  • Treatment: These typically heal on their own. Keeping the area clean and dry can help prevent infection. Avoid further irritation to the area.

• Genital Herpes: Although you mentioned the blister is painless and your STI tests were negative, it's worth noting that genital herpes can sometimes present as painless blisters. However, herpes blisters are usually painful and may be accompanied by other symptoms like itching or burning.

  • Treatment: Antiviral medications can help manage outbreaks. It's important to consult a healthcare provider for a definitive diagnosis.

• Bartholin's Cyst: This is a fluid-filled swelling that can occur near the vaginal opening. While these are usually painless, they can become infected and cause discomfort.

  • Treatment: Small, painless cysts often resolve on their own. Warm sitz baths can help. If the cyst becomes painful or infected, medical treatment may be necessary.

What you can do

While it's important to consult a healthcare provider for a formal diagnosis, here are some steps you can take in the meantime:

1. Keep the Area Clean: Gently wash the area with mild soap and water. Avoid using harsh chemicals or scented products.
2. Avoid Irritation: Wear loose-fitting, breathable underwear to reduce friction. Avoid sexual activity until the blister heals.
3. Warm Compress: Applying a warm compress to the area can help reduce discomfort and promote healing.
4. Monitor Symptoms: Keep an eye on the blister for any changes in size, appearance, or if it becomes painful. Take pictures to track its progress.
5. Use MDandMe: You can use the MDandMe app to journal your symptoms, track your progress, and share your medical notes with your healthcare provider.

What you should look out for

Seek medical attention if you notice any of the following:

• The blister becomes painful, red, or swollen.
• You develop a fever or feel unwell.
• The blister does not improve or worsens over the next few days.
• You notice any unusual discharge or other symptoms.

Remember, while I can provide information and suggestions, it's important to consult a healthcare professional for a formal diagnosis and appropriate treatment.