Hi, may I answer your health queries right now ?  Please type your query here.My tongue has developed a sore ( a white layer with rugged surface ) extended upto throat and i feel pain if i eat anything , and also let you know that I suffered from viral fever for a week and now i have normal temperature ,Dipu, Dhaka
Hi. Welcome to Chat Doctor . I have gone through your query and can understand your concern... As per your complaint the white layer over the tongue is due to yeast infection known as ORAL THRUSH or CANDIDIASIS and there is a possibility that you might have taken antibiotics when you suffered from viral fever and antibiotics many a times precipitate thrush as they disturb the bacterial flora of the mouth that is responsible to fight infection by other organisms. Although viral fever does not cause thrush but reduced immunity during certain infections can lead to over growth of opportunistic organisms like Fungus and cause activation of infection. Nothing to worry, consult an Oral physician and get evaluated and in case if thrush is diagnosed the physician can advise you to take antifungal mouthwash like Statin mouthwash for gargles. Taking more of Probiotics like Yogurt and garlic can help in faster clearing of infection. In case if still it does not resolve oral antifungal medicines like Fluconazole can be advised for 2 weeks course. Hope this information helps. Thanks and regards. Chat Doctor.