4. Symptoms May Show Up Everywhere
You might think that if you get an STI through oral, you just deal with some unpleasant mouth and throat symptoms. The reality is that many types of STIs are a bodywide infection. Once you get infected in one place, it might travel through your body and cause other problems. This is most common if you get syphilis or HIV, but it can happen with other STIs too. Some people may not exhibit any oral symptoms but still get sores and rashes on the genitals.