My ENT has diagnoside me with thrush after being on steroids and antibiotics for surgery. I have deep groves in my tongue and it is very painful to eat or drink. I have no sores inside my mouth; just tongue and roof of mouth where breathing tube was placed. What has caused my tongue to crack?
Hi, Cracks on the tongue can be due to infection or oral thrush and also there is a possibility that you have got fissure tongue leading to deep painful grooves over tongue. So my suggestion to you is to consult an Oral Physician and get yourself checked.  For thrush, you can be advised a course of antifungal medicines like Fluconazole to be taken orally along with Statin mouthwash gargles and sucking Clotrimazole lozenges. You can also gargle with numbing mouthwash like Lidocaine to reduce pain and can suck Capitol lozenges. Avoid spicy and irritant foods, eat plenty of probiotics like yogurt. Hope I have answered your query. Let me know if I can assist you further.