Burning tongue and more

I have been having problems with a burning/tingling sensation on my tongue. My tongue also develops a sore. Strips of my tongue are missing (3 times now). In addition, my tongue also gets swollen making it hard to talk. I don't know if it is related or not but I also get headaches every evening. My tongue feels better in the morning when I wake up and gets progessively worse throughout the day. It also appears to go in cycles with the end of the cycle being the loss of actual pieces of my tongue. Then it seems to get better for a few days and then it starts all over again. I live in rural Iowa. I went to my family physician who eventually sent me to the ENT specialist who comes to our area on Wednesdays. He thought it might be an allergy to a medication or something. So we have removed anything new I have taken in the past year to no avail. He seems unsure as to what to do at this point. I tried rinsing with salt water which although soothing only resulted in the white coating on my tongue to go away and caused increased tongue tenderness. Could you help me?

[JOEY54]

Did you try Folic acid  5mgm Daily oral ? It worked for me

[Jen0301]

Do you smoke or use other tobacco products? My tongue does the same thing from time to time. It seems to be related to periods when I've smoke more than usual.