A year ago I had sudden onset of intense burning and stinging inside my mouth (tongue, gums and throat), as well as itching around my mouth and on a couple spots on my face. It felt just like I had eaten hot peppers, or drank too hot water. Yet I could not see any lesions inside my mouth or on my face, except for some dryness on my skin. It would wake me up at night.
I went to my doctor and to my dentist, who couldn't see anything either: had head x-rays, blood tests, etc... nothing was found. I heard theories from them as possible causes being shingles, herpes simplex, various vitamin deficiencies, food allergies, thrush, etc... yet nothing was really fitting.
I tried everything and more: change my diet drastically, discontinue all cosmetics and toothpaste, add vitamins, remove vitamins, take flavonoids, herbal antivirals, antifungals, detox, etc.. etc... yada yada. It slowly went better over a course of four months, following a decreasing sinusoid kind of curve. If have no idea if and how anything I did had any influence on it getting better.
I also heard about 'burning mouth syndrome' affecting mostly 'middle-aged women with a history of anxiety and depression'...
I was very annoyed to hear that. Why can't I ever have something that's not some kind of mysterious 'syndrome' with no known cause or cure?