Canker Sores (Aphthous Ulcers or Aphthous Stomatitis) Recurring mouth ulcers that just won't heal? It's not always spicy food! Sometimes your body is not irritated it's deficient. Painful sores, burning sensation, difficulty eating or talking these could One cigarette. One ulcer. One ignored symptom can cost you your voice, your mouth and throat. even your Life! , As an ENT surgeon, I see this often patients walk in with, non healing mouth Canker Sores: Causes, Symptoms, Treatments, and Remedies