📙 Oral candidiasis is an invasive fungal infection that may invade into internal organs or other tissues. It can be a frequent and significant source of oral discomfort. It is one of the most common treatable oral mucosal infection seen in patients with HIV. If left untreated, this can lead to prolong recovery and in extreme cases can be fatal when it becomes disseminated. The prognosis is good with appropriate and effective treatment.