3 doctors weighed in:

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?

3 doctors weighed in
Dr. Thomas Yash
Dentistry
1 doctor agrees

In brief: 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.

In brief: 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.
Thank
Dr. Stephen Gordon
Dentistry

In brief: Stress etc.

Cold sores are a result of a virus that is already in his "system" and comes out as a result of stress.
Canker sores may result from localized trauma/injury, lowered resistance, lack of sleep, etc.

In brief: Stress etc.

Cold sores are a result of a virus that is already in his "system" and comes out as a result of stress.
Canker sores may result from localized trauma/injury, lowered resistance, lack of sleep, etc.
Thank
Get help from a real doctor now
Dr. Jonathan Jassey
Board Certified, Pediatrics
16 years in practice
1M people helped
Continue
100,000 doctors available