Since starting nursery last week she has developed red, chapped corners on both sides of her mouth. Never had it before. She also has had diarrohea and never had that before. Does anyone know what might cause it. Only thing I thought of is that they might be trying to feed her with a big spoon and it has rubbed the corners of her mouth- feel too embarrassed to ask. Only other thing is that it might be linked to teething but never heard this symptom mentioned before. anyone know?