Don't go into panic about 'allergies' causing mouth ulcers (what we call 'canker sores' in the UK). Just do a google search on these and giving up / quitting smoking and you'll see that it is a normal reaction for the body.
Angela, I don't see anything I wrote, or the manner in which I wrote, that could be taken as coming across as panicking.
It may be true about canker sores and quitting smoking, but I've quit smoking before, one time for 6 months, and never got canker sores.
I simply said "I think just about anything that's an ingredient could be a culprit for someone who's allergic to certain foods", which is absolutely true. Canker sores can be caused by a reaction to the immune system if someone should be exposed to a food product or ingredient in which they are allergic to. You can find this same information when doing a google search. Allergies CAN cause canker sores.
Quote:
Allergies to foods and other substances have been postulated as being triggers for canker sore breakouts. Any substance that comes into contact with the person's oral tissues must be considered to be a potential causative agent. If an allergy is suspected the individual might choose to maintain a diary so to help them identify the most likely candidates associated with the causation of their sores. In some cases allergy testing might be considered.
Excerpt from:
Canker sores (aphthous ulcers): What are they? What causes these mouth ulcers? Risk factors.