We have all, this week, had really painful tongues, with visible blisters down the sides and at the end. Anything I have Googled has suggested this can be due to drinking, smoking, and eating particular foods, but DP has been working mad hours for the past few weeks and so hasn't eaten at home at all, and obviously DS (3) doesn't smoke or drink and neither do either of us, so not sure what the connecting factor could be for us all to get this at the same time. It really hurts! Any helpful ideas?