Thought I burned my tongue, didn't go away and became very painful . One month later was treated for thrush with 1 pill 100mg fluconazole & nystatin mouth wash, Calmed down but stayed low grade. Treated again with fluconazole, again almost went away but stayed low grade. I doubled the meds and took 200mg a day, again almost gone. (Used listerine/peroxide mouthwash throughout as well). Blisters on the inside of my lips and roof of mouth-CRAZY PAINFUL. Blisters were everywhere. Started fluconazole again 200mg a day for 2 wks