U.S. doctors online nowAsk doctors free
South Africa
A 34-year-old female asked:

Tested neg for stds. last night had oral sex with ex boyfriend. less than 24hrs later have ulcer on roof of mouth. too early for std? scratch maybe?

1 doctor answer1 doctor weighed in
Dr. Mazen Kherallah
Infectious Disease 34 years experience
Observation: The average incubation period after exposure for the first time is 4 days (range, 2 to 12 days). Reactivation of dormant lesions after prior exposure may be sooner. The vesicles break and leave painful ulcers that may take two to four weeks to heal. If persisted or worsened, see your PCP.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Educational text
Free
Talk to a doctor
24/7 visits - just $39!
50% off with $15/month membership

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Educational text
Free
Talk to a doctor
24/7 visits - just $39!
50% off with $15/month membership
Last updated Mar 14, 2015

Disclaimer:

Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.