<s>[INST] My tongue started out with heavy white coating and blisters in the side of the mouth. Did mouth wash with diluted hydrogen peroxide and the coating reduced and the blisters also went away. but now the mouth surface internally specially the inside of the lips feels sore. Even bland food feels spicy. [/INST] Hi. Thanks for the query. It looks like the white coating is due to fungal infection causing Oral Thrush. Ulcer formation is also secondary to fungal infection and there is also a possibility that there is swelling of the taste buds. Soreness inside lips is due to Infection only. You should start gargling with Statin mouthwash and such Clotrimazole lozenges. Apply Lidocaine gel before meals as it will reduce soreness during meals. Do cold water rinses to reduce inflammation. Continue taking bland foods only. If the symptoms does not improve consult an Oral Physician and get evaluated. Hope this helps. Regards. </s>