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Doctor insights on: Can Having Oral Sex With Someone Who Has A Canker Sore Cause Problems

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Dr. Daniel Rubenstein
616 doctors shared insights

Canker Sores (Definition)

Almost everyone is infected with this herpes virus. The first episode is usualy in early childhood. It is dramaticaly different from all the later events. The virus is always present. When your immune system is weakened (stress, disease, almost anything) the viri end up stronger than your immune system. They do their job, and ...Read more


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My boyfriend told me that every time after he gives me oral sex he gets a canker sore, we have both been tested and are negative, what can be the cause?

Local trama: The activity of oral sex may provide enough trama to inner lip or cheeks that may trigger an outbreak of a canker sore or apthous ulcer. These are not infectious or caused by bacteria or virus, just body reaction to some trigger, like stress, trama, certain foods or food coloring or flavorings, etc. ...Read more

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Gave oral sex with canker sore, what is wrong?

Canker sore: Did you mean to say was that wrong? Instead of what is wrong? If it is a lesion from the herpes virus you can indeed infect your partner with this action. Please have it checked out. ...Read more

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Should I refrain from giving oral sex if I have a canker sore in my mouth?

Should I refrain from giving oral sex if I have a canker sore in my mouth?

Play it safe: Apthous-type ulcers are more benign but the previous answer provides warning about the spread of a virally produced lesion. Be safe...Since you dont know which you are dealing with, refrain. ...Read more

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How likely is transmitting HIV through oral sex with a canker sore present?

How likely is transmitting HIV through oral sex with a canker sore present?

There is a chance: Hiv is a blood-borne disease, so any open sores or breaks in the skin/gums can transmit fluids that carry the virus. ...Read more

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I bit my gumline and got a canker sore (not outbreak). I gave oral sex. What are the chances of transmitting hsv1?

Use protection: Not because of the recent outbreak, but for your general protection. Hsv-1 & 2 shed even when there is no visible outbreak and this is when most transmissions occur. Use protection regardless. ...Read more

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I got a canker sore because I bit myself. Is it still bad to give oral sex since I got the canker sore when I accidentally bit my lip while eating?

I got a canker sore because I bit myself. Is it still bad to give oral sex since I got the canker sore when I accidentally bit my lip while eating?

Oral lesion: If you have an open wound, you are more at risk of contracting an STD. As for the sore, is this something you get frequently? If it's herpes labialis (blisters on the lip) you could give it to your partner. If it's a sore inside the mouth it is probably an aphthous ulcer or traumatic injury and is not contagious. ...Read more

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I have a canker sore and i perform oral sex on a woman, can I give her genital herpes?

I have a canker sore and i perform oral sex on a woman, can I give her genital herpes?

Yes: If you have an open sore on your lips, tongue or in your mouth and you have sexual contact the virus causing the lesion can be transferred to your partner. ...Read more

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Dr. Sandra Eleczko
506 doctors shared insights

Aphthous Stomatitis (Definition)

Are small, benign but painful ulcers of the mouth and throat. They generally resolve on their own in 10-14 days. There are various over the counter remedies that ...Read more


Young Health (Definition)

Young Health ...Read more