Has anyone else experienced sores at both mouth corners, now including very dry mouth, sore lips and tongue, sticky mouth feeling? Dermatologist tried me on 4 different mouth cremes unsuccessfully and has referred me to ENT doc in mid March. On my own made a dental appt for tomorrow thinking maybe RA has now caused periodontal disease. Maybe the specialists are looking for zebras when it's actually a horse? Another possibility: could be mouth ulcers caused by methotrexate. Does anyone have thoughts or a similar experience?