Myiasis is most prevalent in Mexico, central and south America, tropical Africa, and the southwestern United States. Although dermal myiasis is rare in most of the United States, it is a disorder that may be seen in international travelers. In the United States, external myiasis is usually caused by the cattle botfly. We report here a case of ophthalmomyiasis involving the left upper eyelid of a child. We examined a six-year-old boy who presented to the Massachusetts Eye and Ear Infirmary (MEEI) in September 1998. He complained of persistent swelling of his left upper eyelid for the previous ten days. The edema and erythema were unresponsive to warm compresses and oral antibiotics. Ocular examination revealed a mild preseptal cellulitis of the left upper eyelid with a small draining fistula. On slit-lamp examination, we found one larva protruding intermittently from the fistula site. The larva was extracted with forceps, wrapped in a moist towel and sent in a jar to the parasitology laboratory. The specimen was identified as a Cuterebra larva by a parasitologist at the Harvard School of Public Health. One week later, the patient's eyelid edema and erythema had completely resolved.
Animal ; Case Report ; Child ; Diagnosis, Differential ; Diptera* ; Eye Infections, Parasitic*/surgery ; Eye Infections, Parasitic*/parasitology ; Eye Infections, Parasitic*/diagnosis ; Eyelid Diseases/surgery ; Eyelid Diseases/parasitology* ; Eyelid Diseases/diagnosis ; Eyelids/parasitology* ; Human ; Larva ; Male ; Myiasis*/surgery ; Myiasis*/parasitology ; Myiasis*/diagnosis

Human myiasis is caused by the parasitic maggots of flies. We report a case of nasal myiasis in a 37-year-old woman in Henan. The patient presented with nasal foreign-body sensation, nansal itching sneezing, snuffle and such allergic symptoms in nasal cavity. Based on maggots that were bowed from the right nasal cavity, a detailed endoscopic examination, sinus CT scan and identification of the maggot's species done by parapsychologists of the parasitology teaching and reseach section of the Zhengzhou University School of Medicine, the diagnosis of human nasal infestation by oestrus ovis was definited.
Adult ; Animals ; Diptera ; Endoscopy ; Female ; Humans ; Larva ; Myiasis ; diagnosis ; Nose ; parasitology ; Nose Diseases ; parasitology

A case of furuncular myiasis was reported for the first time in a 29-year-old young Taiwanese traveler returning from an ecotourism in Peru. Furuncle-like lesions were observed on the top of his head and he complained of crawling sensations within his scalp. The invasive larva of botfly, Dermatobia hominis, was extruded from the furuncular lesion of the patient. Awareness of cutaneous myiasis for clinicians should be considered for a patient who has a furuncular lesion and has recently returned from a botfly-endemic area.
Adult ; Animals ; Diptera ; growth & development ; physiology ; Humans ; Larva ; physiology ; Male ; Myiasis ; diagnosis ; parasitology ; Taiwan ; Treatment Outcome

We report here a case of oral myiasis in the Republic of Korea. The patient was a 37-year-old man with a 30-year history of Becker's muscular dystrophy. He was intubated due to dyspnea 8 days prior to admission to an intensive care unit (ICU). A few hours after the ICU admission, 43 fly larvae were found during suction of the oral cavity. All maggots were identified as the third instars of Lucilia sericata (Diptera: Calliphoridae) by morphology. We discussed on the characteristics of myiasis acquired in Korea, including the infection risk and predisposing factors.
Adult ; Animals ; Diptera/anatomy & histology/*classification ; Humans ; Larva/anatomy & histology/classification ; Male ; Mouth/*parasitology ; Myiasis/*diagnosis/*parasitology ; Republic of Korea

On July 2009, 5 fly larvae were discovered inside the nose of a 76-year-old female. She was living in Cheonan-si, and in a state of coma due to rupture of an aortic aneurysm. Surgery was performed on the day of admission, and the larvae were found 4 days later. By observing their posterior spiracle, the larvae were identified as Lucilia sericata. Considering the rapid development of this species, the infection was likely acquired during hospitalization. Further investigation on the hospital environment should be needed to know the origin of the infection.
Aged ; Animals ; Aortic Rupture/complications ; Cross Infection/diagnosis/parasitology ; *Diptera ; Female ; Humans ; Korea ; *Larva ; Myiasis/*diagnosis/*parasitology ; Nose Diseases/*diagnosis/*parasitology

Myiasis is usually caused by flies of the Calliphoridae family, and Cochliomyia hominivorax is the etiological agent most frequently found in myiasis. The first case of myiasis in a diabetic foot of a 54-year-old male patient in Argentina is reported. The patient attended the hospital of the capital city of Tucuman Province for a consultation concerning an ulcer in his right foot, where the larval specimens were found. The identification of the immature larvae was based on their morphological characters, such as the cylindrical, segmented, white yellow-coloured body and tracheas with strong pigmentation. The larvae were removed, and the patient was treated with antibiotics. The larvae were reared until the adults were obtained. The adults were identified by the setose basal vein in the upper surface of the wing, denuded lower surface of the wing, short and reduced palps, and parafrontalia with black hairs outside the front row of setae. The main factor that favoured the development of myiasis is due to diabetes, which caused a loss of sensibility in the limb that resulted in late consultation. Moreover, the poor personal hygiene attracted the flies, and the foul-smelling discharge from the wound favoured the female's oviposition. There is a need to implement a program for prevention of myiasis, in which the population is made aware not only of the importance of good personal hygiene and home sanitation but also of the degree of implication of flies in the occurrence and development of this disease.
Animals ; Argentina ; Diabetic Foot/*complications/parasitology/pathology ; Diptera/anatomy & histology/classification/*growth & development ; Humans ; Male ; Middle Aged ; Myiasis/*diagnosis/*parasitology ; Ulcer/*complications/parasitology/pathology

Ophthalmomyiasis rarely occurs worldwide, and has not been reported in Korea. We present here a case of ophthalmomyiasis caused by Phormia sp. fly larva in an enucleated eye of a patient. In June 2010, a 50-year-old man was admitted to Dankook University Hospital for surgical excision of a malignant melanoma located in the right auricular area. He had a clinical history of enucleation of his right eye due to squamous cell carcinoma 5 years ago. During hospitalization, foreign body sensation developed in his right eye, and close examination revealed a fly larva inside the eye, which was evacuated. The larva was proved to be Phormia sp. based on the morphology of the posterior spiracle. Subsequently, no larva was found, and the postoperative course was uneventful without any complaints of further myiasis. This is the first case of ophthalmomyiasis among the literature in Korea, and also the first myiasis case caused by Phormia sp. in Korea.
Animals ; Diptera/*pathogenicity ; Eye Diseases/*diagnosis/parasitology/pathology/surgery ; Humans ; Korea ; Larva/pathogenicity ; Male ; Middle Aged ; Myiasis/*diagnosis/parasitology/pathology/surgery

We present a case of oral myiasis in a 15-year-old boy with tuberculosis meningitis. The diagnosis was based on the visual presence of wriggling larvae about 1 cm in size and on the microscopic features of the maggots, especially those relating to stigmatic structures. The larvae were identified as third stage larvae of Sarcophaga sp.
Adolescent ; Animals ; Cross Infection/microbiology/*parasitology ; *Diptera ; Fatal Outcome ; Humans ; Male ; Mouth Diseases/complications/*parasitology ; Myiasis/complications/*diagnosis ; Tuberculosis, Meningeal/complications ; Turkey

PURPOSE: This study aims to determine the frequency of opthalmyomyiasis externa and the ocular findings of disease in Southern Khorasan. METHODS: All patients referred to the emergency department of Valiaser hospital during the year 2011 with external ophthalmomyiasis were enrolled in this study. The diagnosis of external ophthalmomyiasis was made according to clinical findings and the presence of Oestrus ovis larvae. RESULTS: There were 18 cases of external ophthalmomyiasis in the emergency department of Valiaser hospital in 2011. Most cases had the common signs and symptoms of allergic conjunctivitis, except for three males who were referred with respective complaints of red eye, foreign body sensation, and swelling around the eyelids after contact injury the previous day; corneal infiltration was present in three cases. The visual acuity among the three cases that had peripheral corneal involvement was 20 / 30 in both eyes. The bulbar conjunctiva showed chemosis in all cases and a ropy pattern discharge that was clinically compatible with external ophthalmomyiasis. However, in one case, microscopic slit lamp examination did not show Oestrus ovis larvae. CONCLUSIONS: The frequency of external ophthalmomyiasis was high in this region. Although external ophthalmomyiasis usually manifests as allergic conjunctivitis, coronary-like corneal infiltration may be considered in the differential diagnosis of external ophthalmomyiasis or toxic insult.
Adolescent ; Adult ; Aged ; Aged, 80 and over ; Animals ; Cornea/parasitology/*pathology ; Diagnosis, Differential ; *Diptera ; *Emergency Service, Hospital ; Eye Infections, Parasitic/*diagnosis/epidemiology/parasitology ; Female ; Humans ; Incidence ; Iran/epidemiology ; Larva ; Male ; Middle Aged ; Myiasis/*diagnosis/epidemiology/parasitology ; Retrospective Studies ; Young Adult

Animals ; Antiparasitic Agents ; therapeutic use ; Bronchopneumonia ; drug therapy ; parasitology ; Child ; China ; Combined Modality Therapy ; Diagnosis, Differential ; Humans ; Male ; Myiasis ; complications ; diagnosis ; parasitology ; therapy ; Skin Diseases, Parasitic ; drug therapy ; parasitology ; surgery ; Treatment Outcome