Since I was 8 or 9, I've had recurring apthous ulcers ( better known as canker sores) inside my mouth. Usually it was one or two. A little warm salt Water Rinse and they were gone in about a week.
I'm 32 now, and I'm noticing them popping up more frequently, sometimes up to 4.
Everything I know about canker sores tells me they are not an STD. However, would the appearance of multiple canker sores indicate a possible infection, STD or otherwise?