Can the appearance of large mouth ulcers be the result of an allergic reaction to fluconazole?

Hello!

Some medications can indeed cause mouth ulcers. Fluconazole is not known to be a drug that can cause mouth ulcers usually.

Has it happened every time I've taken fluconazole in the past, or is this the first time?

If a seizure occurs every time, it would indeed be quite difficult not to incriminate the drug. However, this would be a fairly uncommon reaction. It would also be strange if the only "allergic" reaction were canker sores. In the case of an allergy, it would be more likely to see inflammation in the mouth, difficulty breathing or red patches on the skin.

If not, have you taken any other medications recently, or do you have any medical diagnoses?

Thanks for the clarification!

The relationship between fluconazole and canker sores is not totally impossible, but it would be quite curious. If you ever have to take it again, you should look for them.

If you want to relieve the pain, you can take Advil or Tylenol. There is also an over-the-counter product called Orabase. It's a paste that you put on the sores in your mouth to act as a protective shield to prevent too much friction, which reduces the pain.

No problem, have a nice evening!