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5 Cards in this Set
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Myiasis
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Myiasis is an infection with a maggot, the larval stage of a fly. Certain species of flies develop as obligate parasites, requiring living tissue in which to mature
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Dermatobia hominis
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The human bot fly of Central and South America
Grabs a little fly or mosquito and lays its eggs on them and releases them. The little fly or mosquito then lands on a human to bite, and at the same time will leave behind the egg of the bot fly. The eggs burrow in the skin. Occurs frequently on the back of legs. The larvae has to be surgically excised. |
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Cordylobia anthropophaga
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Tumbu fly of africa. Various species of facultatively parasitic flies may lay their eggs on or near sores or necrotic tissue. The maggots hatch out and burrow into the wound, usually feeding on dead tissue. However, some species may cause serious damage and death if left untreated.
Lives on soiled clothing, like diapers, and when placed on child, will lay eggs on the clothes. THe emerging larvae attach themselves to any host with who they come in contact and penetrate the skin. After penetration, larvae cause individual tender abscess-like swelling from which serous fluid exudes. Can squeeze out larvae or cover with petroleum jelly. |
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Scabies
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The human itch mite is a small, particularly irritating pest, transmitted by contact, which burrows into the skin. Infection may be prolonged and painful. Children are particularly susceptible.
The mite makes a tunnel into the skin and lays eggs in the tunnels. Find particularly in the webs of the fingers and toes. Skin rash on the torso is a secondary response to the infection. Immunocompromised individuals may get uncontrolled scabies. Treatment: compounds against lice are also effective against scabies. Ivermectin also works. |
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Ticks
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Examples of diseases: Rocky mountain spotted fever, colorado tick fever, babesiosis and Lyme disease are some of the more common.
Tick paralysis can result from the prolonged attachment of ticks, usually in children. Removal of ticks produces remarkable recovery. Treatment: removal of tick. A few drops of chloroform or ether on the tick's head will relax it; then grasp the anterior portion of the tick near the head and pull straight back with steady traction. Be sure to get the mouth portion, as it can continue to inject its toxin without the rest of the tick. |
