Ans: A. Chronic atrophic candidiasisChronic erythematous (atrophic) candidiasis appears as a red, raw-looking lesion instead of a white patch seen in all other types.Erythematous (atrophic) candidiasis:Appears as a red, raw-looking lesion.Subtypes of erythematous candidiasis:Denture-related stomatitis, angular stomatitis, median rhomboid glossitis & antibiotic-induced stomatitis.Since they are commonly erythematous/atrophic.Precede pseudomembrane formation,.Left when membrane is removed, or arise de novo.Tongue:Loss of lingual papillae, leaving a smooth area on tongue.Occurs on dorsum of tongue in long-term coicosteroids or antibiotic patient.But occasionally it can occur after only a few days of using a topical antibiotic.This is usually termed 'antibiotic sore mouth/stomatitis' because it is commonly painful as well as red.