Why do i get mouth ulcers??!

Why do i get mouth ulcers??

i have been a sufferer since i was young, sometimes one, sometimes in clusters, i've had everything from mouthwash to vitamins, to pellets that disolve on the ulcer to bonjela. thought about it being stress related but i dont think thats it. it's so bad today that i cant eat or talk properly. does anyone know why this happens?

1 month ago
i have seen my doctor loads of times but they cant come up with anything.

There are many things that can lead to mouth ulcers.
They can be caused by an overreaction by the body's own immune system. They seems to be provoked by stress, fatigue, illness, injury from accidental biting, hormonal changes, menstruation, sudden weight loss, food allergies and deficiencies in vitamin B12, iron and folic acid. So if they are reaccuring it might well be worth going back to your GP and asking for a blood test, results should be back in around 3 days. Or prehaps you could try going to your local health foods shop and trying some suppliments and vitamins.
Some prescriptions and recreational drugs can cause them too.
Hope that helps a little :)