Those fluids can enter the bloodstream of someone who doesn't have HIV during any type of sexual activity, including oral sex, through an opening such as a mouth sore or a genital ulcer.

Looking after your mouth is very important. Many HIV-related conditions can affect the mouth, causing symptoms such as ulcers, dry mouth and painful lesions. Mouth problems can be caused by fungal ...

and HIV infection. The primary goals of therapy for RAU are relief of pain, reduction of ulcer duration, and restoration of normal oral function. Secondary goals include reduction in the frequency ...

However, ejaculation in the mouth with oral ulcers, bleeding gums, or genital sores can increase the chances of HIV transmission. You can also get other sexually transmitted infections from oral sex.