I wonder if you were gluten-free long enough. Yeast
can also be to blame and can cause the mouth ulcers, etc. Many Hashis have an underlying yeast
issue and are prone to yeast infections. I drink one tbsp virgin coconut oil per night from www.naturesflavors.com to combat my yeast. It has helped immensely. I no longer get mouth ulcers/thrush.
Caffeine, dairy, yeast, gluten, corn, green tea, iodine, can cause antibodies to attack, depending on the Hashi individual.