Can allergies cause stomach aches?

Can mouth ulcers cause stomach aches?

• so i have a canker sore\mouth ulcer in the back of my throat for the past 3 days. and it hurts nonetheless. but can this cause stomach aches? what else can this cause?

• Answer:

  if you chew on your mouth ulcer it may have the same as chewing gum on stomach acid. If you chew gum you produce a lot of saliva but also your stomach prepares itself for digestion by producing lots of stomach acid. This can cause stomach aches as you don't swallow the chewing gum leaving the acid and protease enzymes to attack the stomach lining. In the same way chewing or sucking on the ulcer may trigger the same responce how ever it isn't anything to worry about.