How do you treat canker sores in your mouth that keep popping up every now and then, coincidently when there is a lot of stress or anxiety?

Prevention: Canker sore or more specifically aphthous ulcer can be prevented by avoiding a common foam detergent found in most toothpastes called sodium laurel sulfate. Switching to biotene or other toothpaste not containing this ingredient can be the cure in preventing this painful condition. During an episode, 2000 mg of lysine in divided doses per day can decrease the symptoms and time involved to heal.

Management...: In your case, since you already know that stress is the triggering cause of your canker sore, you have no other option but to manage your anxiety and/or stress. Identify what is causing distress and do something about it. Seek help with a counselor or a psychologist or a church spiritual leader.