Human intraoral myiasis

Deise Ponzoni,Edela Puricelli,Vinícius Matheus Szydloski,Alexandre Silva De Quevedo,Renan Cavalheiro Langie

doi:10.33448/rsd-v10i12.20160

Abstract

Introduction: Myiasis, a pathological condition in which dipteran larvae infect and parasitise a host, usually occurs in tropical and subtropical climate countries. Larvae can infect different parts of the human body. Intraoral human myiasis is considered a rare condition that is associated with systemic, local and environmental predisposing factors. Objective and case report: This case report describes a systemically compromised patient with expressive intraoral infestation causing pain, bleeding and tissue necrosis. The patient was treated in a hospital environment under the effects of general anaesthesia. Treatment consisted of removal of the larvae, surgical debridement and use of ivermectin. Final considerations: The control of hygiene conditions by the family/caregivers and dental care are determinant for the prevention of intraoral human myiasis, especially in patients with defective self-care presenting with dentofacial skeletal alterations that make normal mouth closure impossible. The control of the disease is a determinant to avoid potential complications, such as airway involvement, secondary infections and sepsis.

Highlights

IntroductionMyiasis is an ectoparasitic infestation of viable or necrotic tissues of living vertebrates (animals and humans) by larvae of several species of the order Diptera (Ahmadpour et al, 2019; Batista et al, 2019; Bernhardt, Finkelmeier, Verhoff, & Amendt, 2019; Calvopina et al, 2020; de Arruda et al, 2017; Duque & Ardila, 2011; Girardi & Scrofernecker, 2017; Faridnia et al, 2019)
Myiasis, a pathological condition in which dipteran larvae infect and parasitise a host, usually occurs in tropical and subtropical climate countries
Several species of dipterans have been associated with human myiasis

Summary

Introduction

Myiasis is an ectoparasitic infestation of viable or necrotic tissues of living vertebrates (animals and humans) by larvae of several species of the order Diptera (Ahmadpour et al, 2019; Batista et al, 2019; Bernhardt, Finkelmeier, Verhoff, & Amendt, 2019; Calvopina et al, 2020; de Arruda et al, 2017; Duque & Ardila, 2011; Girardi & Scrofernecker, 2017; Faridnia et al, 2019). Human myiasis has a worldwide distribution and is endemic (Calvopina et al, 2020; Faridnia et al, 2019). It is considered rare in most regions of the world, due to the fact that dipteran species associated with this condition do not survive in areas of unfavourable climatic conditions. One of the first reports of human myiasis in Brazil was documented by Brandão and Menezes (1875) and included 30 cases, mainly involving the nasal cavities (Costa-Júnior et al, 2019; Kuria & Oyedeji, 2020). Regardless of the affected site, is based on the mechanical removal of larvae, surgical debridement of devitalised tissues and drug administration (Ashour, 2019; Batista et al, 2019; de Arruda et al, 2017; Ribeiro, de Almeida, Lopes, Castro, & Pinheiro, 2012)

Methodology

Case Report

Discussion

Final Considerations