I have had a problem for about 15 months. If I touch the roof of my mouth (hard palate) with my tongue, or finger, I have an unpleasant transference of the sensation to under / around my right eye. I have seen an ENT Consultant and had nasal endoscopy. This showed nothing unusual. I have had dental x-rays and treatment. There was some sign of infection (not a great deal judging from the x-ray) and I have had root canal treatment (one week ago). It does not appear to have had any effect as the unpleasant sensation on touch remains. I have slight pain in the nasal cavity on occasion now (for the last few weeks). I get regular partial congestion in the right nostril, but this does clear if I lie on my right side, or generally if the weather is colder. I have been referred to another ENT Consultant, but the issue seems to me to be more neurological - issue regarding the trigeminal nerve? I think I need to direct the search for the actual cause more than following the suspicions of others now as the problem has gone on for so long.