Health Benefits Center

Any suggestions for repeat canker sores?

I've been getting canker sores for about 11 years now. I usually go a few months or even over a year in between "outbreaks". Which usually consists of one or two sores at a time. But about three months ago I got a huge canker sore on my left cheek, the next morning I had a second one on the left cheek, then two on the right cheek. Two on the left side of my tongue, one almost back in my throat. They take forever to heal, mostly cause they're so large but also because my cheeks are so irritated by the large sores they swell a little and my teeth constantly rub against them even when I all do is open my mouth or reflexively swallow. After two weeks they finally went away. Two weeks later they were back, all of them, the exact same spots. A month after the beginning of that outbreak the same batch returned again. This time with a little one on my left cheek by the corner of my mouth.
Any ideas on what's going on? Or, how to deal with it?
Anybody know of toothpaste brands that don't use sodium laurly sulfate?
What doctor do you go and see for canker sore issues? A general doctor, dentist, any others?