White patch on tounge. Please help.

Hi i am 23 year old married woman mother of a child. Since 4 years i am suffering from i dont know what. My tounge has white patch,which hurt when i have some spicy food otherwish dont bother me much. I went to 3 dermos and one of them said it is lichen planus gave m medicine fr 3 months.didnt work! I will attach his prescription. Another two dermos said it is fungus and they prescribed some medicines i had them too for 6 months. But nothing changed after having several medicnes nothing wrked fr me. I will attach medicines pictures which they gave me fr fungus. I will attach my tounge pictures too. If u can help me. I stay in delhi. Fr fungus two dermos gave me- itraconazole, i had them fr 6 months. Please help. Thanks n regards.