Myiasis - Revision history

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2025-04-09T00:36:23Z

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← Older revision		Revision as of 00:36, 9 April 2025
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	\| frequency = Common in tropical and subtropical regions		\| frequency = Common in tropical and subtropical regions
	}}		}}
			== '''Definition''' ==
	Myiasis is the infection of a fly larva (maggot) in human tissue.		Myiasis is the infection of a fly larva (maggot) in human tissue.
	The infection of a fly larva (maggot) in human tissue, which most commonly occurs in tropical climates. Affected tissues most commonly include skin, especially if open wounds are present, nasal passages, ears, and eyes.		The infection of a fly larva (maggot) in human tissue, which most commonly occurs in tropical climates. Affected tissues most commonly include skin, especially if open wounds are present, nasal passages, ears, and eyes.
			[[File:Myiasis papule furuncle caused by cordylobia anthropophaga.jpg\|left\|thumb]]
	[[File:Chrysomya-bezziana-adults-myiasis-larvae-2.jpg\|left\|thumb]]		[[File:Chrysomya-bezziana-adults-myiasis-larvae-2.jpg\|left\|thumb]]
	[[File:Chrysomya myiasis skin.png\|left\|thumb]]		[[File:Chrysomya myiasis skin.png\|left\|thumb]]

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2025-04-08T03:39:11Z

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← Older revision		Revision as of 03:39, 8 April 2025
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	== ~~'''Definition'''~~ ==		{{SI}}
			{{Infobox medical condition
			\| name = Myiasis
			\| image = [[File:Miasis_human.jpg\|250px]]
			\| caption = Myiasis in a human
			\| field = [[Infectious disease]]
			\| symptoms = [[Skin]] lesions, [[pain]], [[itching]], [[fever]]
			\| complications = [[Secondary infection]], [[tissue damage]]
			\| onset = Rapid
			\| duration = Varies
			\| causes = [[Fly]] larvae infestation
			\| risks = Poor [[hygiene]], exposure to [[flies]]
			\| diagnosis = Clinical examination, identification of larvae
			\| differential = [[Cellulitis]], [[abscess]], [[dermatitis]]
			\| prevention = Good hygiene, protective clothing, insect repellent
			\| treatment = Removal of larvae, [[antibiotics]] for infection
			\| prognosis = Generally good with treatment
			\| frequency = Common in tropical and subtropical regions
			}}
	Myiasis is the infection of a fly larva (maggot) in human tissue.		Myiasis is the infection of a fly larva (maggot) in human tissue.
	The infection of a fly larva (maggot) in human tissue, which most commonly occurs in tropical climates. Affected tissues most commonly include skin, especially if open wounds are present, nasal passages, ears, and eyes.		The infection of a fly larva (maggot) in human tissue, which most commonly occurs in tropical climates. Affected tissues most commonly include skin, especially if open wounds are present, nasal passages, ears, and eyes.
	~~[[File:Myiasis papule furuncle caused by cordylobia anthropophaga.jpg\|thumb]]~~		[[File:Chrysomya-bezziana-adults-myiasis-larvae-2.jpg\|left\|thumb]]
	[[File:Chrysomya-bezziana-adults-myiasis-larvae-2.jpg\|thumb]]		[[File:Chrysomya myiasis skin.png\|left\|thumb]]
	[[File:Chrysomya myiasis skin.png\|thumb]]


	== '''Epidemiology''' ==		== '''Epidemiology''' ==
	Myiasis occurs in tropical and subtropical areas. These can include countries in Central America, South America, Africa, and the Caribbean Islands.		Myiasis occurs in tropical and subtropical areas. These can include countries in Central America, South America, Africa, and the Caribbean Islands.

	== '''Cause''' ==		== '''Cause''' ==
	* Myiasis is infection with the larval stage ([[Maggot\|maggots]]) of various flies.		* Myiasis is infection with the larval stage ([[Maggot\|maggots]]) of various flies.
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	* Cordylobia anthropophaga is known as the tumbu fly.		* Cordylobia anthropophaga is known as the tumbu fly.
	* Flies in the genera Cuterebra, Oestrus and Wohlfahrtia are animal parasites that also occasionally infect humans.		* Flies in the genera Cuterebra, Oestrus and Wohlfahrtia are animal parasites that also occasionally infect humans.

	== '''Tranmission''' ==		== '''Tranmission''' ==
	There are several ways for flies to transmit their larvae to people.		There are several ways for flies to transmit their larvae to people.
	* Some flies deposit their eggs on or near a wound or sore, the larvae that hatch burrow into the skin. Certain ~~species’~~ larvae will move deeper in the body and cause severe damage.		* Some flies deposit their eggs on or near a wound or sore, the larvae that hatch burrow into the skin. Certain species‚Äô larvae will move deeper in the body and cause severe damage.
	* Some flies attach their eggs to mosquitoes, other flies or ticks and wait for those insects to bite people. Their larvae then enter these bites.		* Some flies attach their eggs to mosquitoes, other flies or ticks and wait for those insects to bite people. Their larvae then enter these bites.
	* One type of fly found in Africa lays its eggs on the ground or on damp cloth such as clothing or bed linens that are hung out to dry. The larvae hatch from the eggs and people get infected by contact with the ground or clothes that have fly larvae attached to them.		* One type of fly found in Africa lays its eggs on the ground or on damp cloth such as clothing or bed linens that are hung out to dry. The larvae hatch from the eggs and people get infected by contact with the ground or clothes that have fly larvae attached to them.

	== '''Signs and symptoms''' ==		== '''Signs and symptoms''' ==
	* A lump will develop in tissue as the larva grows.		* A lump will develop in tissue as the larva grows.
	* Larvae under the skin may move on occasion.		* Larvae under the skin may move on occasion.
	* Usually larvae will remain under the skin and not travel throughout the body.		* Usually larvae will remain under the skin and not travel throughout the body.

	== '''Diagnosis''' ==		== '''Diagnosis''' ==
	* Clues that myiasis may be present include recent travel to an endemic area, one or more non-healing lesions on the skin, itchiness, movement under the skin or pain, discharge from a central punctum (tiny hole), or a small, white structure protruding from the lesion.		* Clues that myiasis may be present include recent travel to an endemic area, one or more non-healing lesions on the skin, itchiness, movement under the skin or pain, discharge from a central punctum (tiny hole), or a small, white structure protruding from the lesion.
	* Serologic testing has also been used to diagnose the presence of botfly larvae in human ophthalmomyiasis.		* Serologic testing has also been used to diagnose the presence of botfly larvae in human ophthalmomyiasis.

	== '''Treatment''' ==		== '''Treatment''' ==
	* Fly larvae need to be surgically removed.		* Fly larvae need to be surgically removed.
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	* Preventing possible exposure is key advice for patients traveling in tropical areas of Africa and South America.		* Preventing possible exposure is key advice for patients traveling in tropical areas of Africa and South America.
	* Those with untreated and open wounds are more at risk.		* Those with untreated and open wounds are more at risk.

	== '''Prevention''' ==		== '''Prevention''' ==
	* Take extra care going to tropical areas and spending a lot of time outside.		* Take extra care going to tropical areas and spending a lot of time outside.
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	* In areas where myiasis is known to occur, protect yourself by using window screens and mosquito nets.		* In areas where myiasis is known to occur, protect yourself by using window screens and mosquito nets.
	* In tropical areas, iron any clothes that were put on the line to dry.		* In tropical areas, iron any clothes that were put on the line to dry.

	== '''Spread''' ==		== '''Spread''' ==
	No. Myiasis is not spread from person to person. The only way to get myiasis is through flies, ticks, and mosquitoes.		No. Myiasis is not spread from person to person. The only way to get myiasis is through flies, ticks, and mosquitoes.

	{{Pediculosis, acariasis and other infestations}}		{{Pediculosis, acariasis and other infestations}}

	[[Category:Neglected tropical diseases]]		[[Category:Neglected tropical diseases]]
	[[Category:Tropical diseases]]		[[Category:Tropical diseases]]

Deepika vegiraju at 14:13, 28 April 2021

2021-04-28T14:13:49Z

New page

== '''Definition''' ==
Myiasis is the infection of a fly larva (maggot) in human tissue.
The infection of a fly larva (maggot) in human tissue, which most commonly occurs in tropical climates. Affected tissues most commonly include skin, especially if open wounds are present, nasal passages, ears, and eyes.
[[File:Myiasis papule furuncle caused by cordylobia anthropophaga.jpg|thumb]]
[[File:Chrysomya-bezziana-adults-myiasis-larvae-2.jpg|thumb]]
[[File:Chrysomya myiasis skin.png|thumb]]

== '''Epidemiology''' ==
Myiasis occurs in tropical and subtropical areas. These can include countries in Central America, South America, Africa, and the Caribbean Islands.

== '''Cause''' ==
* Myiasis is infection with the larval stage ([[Maggot|maggots]]) of various flies.
* Flies in several genera may cause myiasis in humans.
* Dermatobia hominis is the primary human bot fly.
* Cochliomyia hominovorax is the primary screwworm fly in the New World and Chrysomya bezziana is the Old World screwworm.
* Cordylobia anthropophaga is known as the tumbu fly.
* Flies in the genera Cuterebra, Oestrus and Wohlfahrtia are animal parasites that also occasionally infect humans.

== '''Tranmission''' ==
There are several ways for flies to transmit their larvae to people.
* Some flies deposit their eggs on or near a wound or sore, the larvae that hatch burrow into the skin. Certain species’ larvae will move deeper in the body and cause severe damage.
* Some flies attach their eggs to mosquitoes, other flies or ticks and wait for those insects to bite people. Their larvae then enter these bites.
* One type of fly found in Africa lays its eggs on the ground or on damp cloth such as clothing or bed linens that are hung out to dry. The larvae hatch from the eggs and people get infected by contact with the ground or clothes that have fly larvae attached to them.

== '''Signs and symptoms''' ==
* A lump will develop in tissue as the larva grows.
* Larvae under the skin may move on occasion.
* Usually larvae will remain under the skin and not travel throughout the body.

== '''Diagnosis''' ==
* Clues that myiasis may be present include recent travel to an endemic area, one or more non-healing lesions on the skin, itchiness, movement under the skin or pain, discharge from a central punctum (tiny hole), or a small, white structure protruding from the lesion.
* Serologic testing has also been used to diagnose the presence of botfly larvae in human ophthalmomyiasis.

== '''Treatment''' ==
* Fly larvae need to be surgically removed.
* No medications approved by the FDA are available for treatment.
* Preventing possible exposure is key advice for patients traveling in tropical areas of Africa and South America.
* Those with untreated and open wounds are more at risk.

== '''Prevention''' ==
* Take extra care going to tropical areas and spending a lot of time outside.
* Cover your skin to limit the area open to bites from flies, mosquitoes, and ticks.
* Use insect repellant and follow Travelers Health guidelines.
* In areas where myiasis is known to occur, protect yourself by using window screens and mosquito nets.
* In tropical areas, iron any clothes that were put on the line to dry.

== '''Spread''' ==
No. Myiasis is not spread from person to person. The only way to get myiasis is through flies, ticks, and mosquitoes.

{{Pediculosis, acariasis and other infestations}}

[[Category:Neglected tropical diseases]]
[[Category:Tropical diseases]]
[[Category:Sheep and goat diseases]]
[[Category:Arthropod infestations]]
[[Category:Veterinary entomology]]
[[Category:Parasitic infestations, stings, and bites of the skin]]
{{rarediseases}}
{{stub}}