1/19. Cutaneous myiasis from Dermatobia hominis.We present a case report of cutaneous myiasis in a foreign traveler who was infected by Dermatobia hominis while visiting south america. This patient developed a painful furuncular lesion on the anterior scalp and noted that the lesion drained a serosanguinous fluid for more than a month before definitive treatment. Invasion of mammalian tissue by the larval forms of D. hominis typically results in the formation of a classic furuncular lesion. For persons who present with a lesion that contains a central draining stoma located on an exposed body surface, the diagnosis of myiasis should always be considered. In addition to the case report, we present a discussion of furuncular myiasis and describe the peculiar life cycle of the human botfly. We also describe the various therapies that may be employed for treating cutaneous myiasis, including surgical extraction of the larva and asphyxiation of the larva by application of petroleum jelly or other fat derivatives to the central stoma or breathing aperture.- - - - - - - - - - ranking = 1keywords = cycle (Clic here for more details about this article) |
2/19. Imported furuncular myiasis in germany.Furuncular myiasis is a parasitic infestation of human and other vertebrate tissues by fly larvae of primarily two species: Dermatobia hominis (human botfly, t6rsalo, or berne) in mexico and South and central america and Cordylobia anthropophaga (tumbu fly or mango fly) in africa. Cuterebra species (rabbit and rodent botflies) are also rarely reported to cause furuncular myiasis only within the united states. Although these species inhabit different geographic regions and have different life cycles, their clinical presentations can be similar. We describe a case of "imported" human botfly (D. hominis) furuncular myiasis in a U.S. Army soldier stationed in germany. We review the life cycles of human botflies and key aspects of their clinical presentation, differential diagnosis, and various therapeutic modalities. Most physicians may never encounter myiasis and attribute a patient's complaints to an insect bite or skin infection that will heal without treatment. However, the diagnosis of furuncular myiasis should be considered by remembering the basic elements of this condition: recent travel history to the tropics and a sterile, persistent furuncle with sensations of movement and pain.- - - - - - - - - - ranking = 2keywords = cycle (Clic here for more details about this article) |
3/19. Stowaways with wings: two case reports on high-flying insects.More people than ever before are traversing continents, either for business purposes or on holiday. Because 3-10 percent of these travelers experience skin, hair, or nail disorders related to these trips there is an increasing likelihood that Western physicians will be expected to treat exotic conditions imported from different countries. tungiasis and furunculoid myiasis are two typical disorders of intertropical regions. They represent nuisances induced by the presence of arthropod larvae or eggs in the skin. We describe a case of tungiasis, caused by the sand flea tunga penetrans (TP), and a case of myiasis, caused by Dermatobia hominis (DH), and briefly discuss the epidemiology, biologic life cycles, vectors, reservoirs, and clinical presentations of these parasites.- - - - - - - - - - ranking = 1keywords = cycle (Clic here for more details about this article) |
4/19. myiasis with Lund's fly (Cordylobia rodhaini) in travelers.myiasis is an infestation of human tissue by the larvae of certain flies. There are many forms of myiasis, including localized furuncular myiasis, creeping dermal myiasis and wound and body cavity myiasis.1 Cordylobia anthropophaga (the Tumbu fly) and Dermatobia hominis (the human botfly) are the most common causes of myiasis in africa and tropical America respectively. The genus Cordylobia also contains two less common species, C. ruandae and C. rodhaini. The usual hosts of C. rodhaini are various mammals (particularly rodents), and and humans are accidentally infested. Figure 1 shows the life cycle of C. rodhaini, which occurs over 55 to -67 days.3 The female fly deposits her eggs on dry sand polluted with the excrement of animals or on human clothing. In about 3 days, the larva is activated by the warm body of the host, hatches and invades the skin. As the larva matures, it induces a furuncular swelling. In 12 to -15 days, the larva reaches a length of about 23 mm, exits the skin and falls to the ground to pupate. The adult fly emerges in 23 to -26 days, and the life cycle resumes. In humans, the skin lesion starts as a red papule that gradually enlarges and develops into a furuncle. In the center of the lesion an opening forms, through which the larva breaths and discharges its serosanguinous feces. The lesion is associated with increasing pain until the larva exits the skin. The disease is usually uncomplicated and self-limiting.- - - - - - - - - - ranking = 2keywords = cycle (Clic here for more details about this article) |
5/19. Dermatobia hominis infestation: a case report.The hazards presented by the Central American tropical environment are myriad. We report a case of cutaneous myiasis caused by the human botfly, Dermatobia hominis, in a soldier who had participated in military operations in central america. The clinical presentation, treatment, and unique life cycle of the human botfly is discussed.- - - - - - - - - - ranking = 1keywords = cycle (Clic here for more details about this article) |
6/19. Furuncular myiasis caused by Dermatobia hominis, the human botfly.myiasis is a common travel-associated dermatosis. Travelers to many parts of Central and south america are susceptible to infestation by Dermatobia hominis. Despite the common name of human botfly, D hominis infests a broad range of mammals and is a severe pest to economically important farm animals in endemic regions. The adult female does not lay the eggs on the host. Instead, the adult female infests hosts indirectly by using blood-feeding arthropods to serve as phoretic vectors to transport the eggs. We present a patient who acquired Dermatobia when bitten by a day-active mosquito during a visit to guatemala. He had a locally painful, firm furuncular lesion with a central pore that drained serosanguineous exudates. The patient applied an occlusive ointment and recovered the larva after it emerged. In this report we discuss the life cycle of D hominis, the differential diagnosis, and therapeutic approaches.- - - - - - - - - - ranking = 1keywords = cycle (Clic here for more details about this article) |
7/19. Unusual botfly skin infestation.myiasis, the infestation of humans and animals with fly larvae, is observed in tropical, lowland areas. Dermatobia hominis is a common cause of cutaneous human infestation in these areas. patients often present with a furuncular lesion on the extremities, back, or scalp. We report a case of furuncular myiasis in a patient returning from a trip to south america. We will discuss the life-cycle of D. hominis and the clinical findings important in the diagnosis of myiasis.- - - - - - - - - - ranking = 1keywords = cycle (Clic here for more details about this article) |
8/19. Cutaneous myiasis due to the Tumbu fly during Operation Keeling.Cutaneous myiasis is a temporary infestation of the skin with fly larvae (1). The following is a description of a case of cutaneous myiasis caused by the African Tumbu fly (Cordylobia anthropophaga). The clinical presentation and treatment of this infestation is discussed. A review of the Tumbu fly's lifecycle with emphasis on the prevention of the disease in the operational environment is also described.- - - - - - - - - - ranking = 1keywords = cycle (Clic here for more details about this article) |
9/19. Ophthalmomyiasis caused by the sheep bot fly Oestrus ovis in northern iraq.myiasis is the feeding of fly larvae on vertebrates. The sheep bot fly larva of Oestrus ovis is a mammalian parasite of the skin, nose, ears, and eyes. When the larvae infest and feed on the structures of the eye, the condition is termed ophthalmomyiasis. Most often this infestation is limited to the external structures of the eye and is referred to as ophthalmomyiasis externa. The features of this condition are severe local inflammation, positive foreign body sensation, erythema, and lacrimation. Vision may or may not be reduced, depending on involvement of the cornea. A 20-year-old white male soldier sought treatment for an inflamed eye and an irritated cornea OS. His eyelids were swollen with marked periorbital edema and conjunctival erythema OS. On slitlamp examination, small whitish organisms were viewed on the conjunctiva OS. The organisms were removed, preserved, and sent to Nova Southeastern University where they were identified as O. ovis first-stage larvae. The patient was treated with antibiotic ointment, and the inflammation resolved within 1 week. O. ovis has a worldwide distribution, and although sheep are the preferred host, humans may also serve as an intermediate host in the organism's life cycle. This case represents one of several reports of ophthalmomyiasis in the middle east caused by O. ovis. U.S. troops stationed in iraq and surrounding areas are vulnerable to eye infestation by fly larvae, and health care providers need to include this condition in their differential diagnosis of anterior segment inflammatory disorders.- - - - - - - - - - ranking = 1keywords = cycle (Clic here for more details about this article) |
10/19. Digital infestation with the human bot fly.We report a finger infestation by the human bot fly, Dermatobia hominis, describe the biology and life cycle of the fly and review the diagnosis and treatment of the condition.- - - - - - - - - - ranking = 1keywords = cycle (Clic here for more details about this article) |
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