Hi Thanks for your query and Welcome to HCM As per discussion your son have had oral candidiasis Candidiasis that develops in the mouth or throat is called thrush or oropharyngeal candidiasis. The most common symptom of oral thrush is white patches or plaques on the tongue and other oral mucous membranes. This infection is uncommon among healthy adults Candida species are normal inhabitants of the mouth, throat. And do not cause any harm. However, the use of certain medications or a weakening of the immune system can cause Candida to multiply, which may cause symptoms of infection. Oral candidiasis usually responds to topical treatments such as clotrimazole troches and nystatin suspension Systemic antifungal medication such as fluconazole or itraconazole may be necessary for oropharyngeal infections that do not respond to these treatments