Hi, Thank you for the query. According to the history white patches in the mouth suggests of leukoplakia Leukoplakia is a condition where keratosis appear as adherent white patches on the mucous membrane of the oral cavity which cannot be removed by rubbing . Treatment is done by removal of the irritant leading to formation of the patches which can be irregular teeth or smoking or alcohol . The lesions have to be removed surgically.Altered taste and difficulty in swallowing suggests of the spread into the posterior area . See your dentist and discuss about the treatment plan and continue taking bicasule and lycored. Hope this information helps you.