Introduction: The term myiasis is applied to the injurious action that larvae of certain Diptera cause in vertebrate animals by growing in living or dead tissue. Because of its great destructive potential, appropriate and preventive treatment is necessary. Oral myiasis is a rare pathology in humans and is associated with poor oral hygiene, alcoholism, senility, suppurating lesion, severe halitosis, and other conditions.
Method: We have presented a case of oral myiasis in a mentally challenged patient.
Results: Reviewing the literature revealed that most of the cases involved the anterior part of the oral cavity of male patients living in developing or underdeveloped countries and also that predisposing factors invariably accompanied infestation.