Hello Sir, This side Anas Ahmad from Kanpur. Sir this problem is related to my father...in his mouth there are white patches. We concerned this thing to many doctor and he is also taking the medicines from last 1.5 years... and there is no itching and all in his mouth...sometimes these White patches turns to red or pink and sometimes its turn back to white..some doctors said that there is chances of cancer then we also gone to J K cancer Kanpur and they said there is no symptoms of cancer..