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A Brazilian humans with elephantiasis , a uncommon condition in which masses ’s limbs become discolored and puff up to tremendous sizes , was recently sport on   the popular Animal Planet show " River Monsters , " which often motion picture in tropic , heavily forested venue .

As the name " elephantiasis " implies , the condition have a person ’s tree branch to resemble that of an elephant .

elephantiasis, swellling, parasite

This CDC photo, from 1962, shows a man in the Philippines with elephantiasis of the lower limbs.

Elephantiasis is really a complication of aparasitic infectioncalled lymphatic filariasis . More than 120 million people in 73 countries have this transmission , agree to the Centers for Disease Control and Prevention(CDC ) .

The worm - corresponding parasites that cause the infection are spread by mosquito bites , said Dr. Amesh Adalja , an infectious - disease specialist and a older associate at the University of Pittsburgh Medical Center ’s Center for Health Security .

However , most mass who become septic with the parasites do not have any symptoms , Adalja told Live Science . And only some evolve long - term symptom , such as elephantiasis , he said . It ’s ill-defined why some people go on to develop elephantiasis and others do not , he sum up .

an image of a person with a skin condition showing parasites under their skin

Once in the body , the sponger go in thelymphatic system , according to the CDC .   The lymphatic system , which includes the lymph nodes , is a connection of tissue and organs in the body that help free the body of permissive waste . When it is down properly , lymph ( a clear fluid containing white roue cell ) can build up . [ The 10 Most Diabolical and Disgusting Parasites ]

Symptoms modernise when the parasites pop out to change the lymphatic system of rules , Adalja say . A single mosquito bite is not enough to get these changes , however . Rather , a mortal require to be infect repeatedly with the leech for symptoms to develop , and each clip a somebody is infected , the scathe to the lymphatic organisation worsen , he said .

The contagion can finally get the lymphatic vessels to become so dilated that the lymph fluid pools in a region of the person ’s eubstance — normally , the branch , breasts or genitalia , he say . This pooling is what have the massiveswellingassociated with elephantiasis .

A close-up picture of a black and red tick perched on a leaf

The swelling have the skin to stretch beyond its normal capabilities , Adalja say . This can severelydamage the skin , and finally lead to the variety in color and texture that occurs in elephantiasis , he sound out .

Although the transmission can be treated in its earlier stages withanti - bloodsucking medication , it ’s unclear whether intervention is beneficial once a person has developed elephantiasis , Adalja say .

Rather , the goal is to treat people early , before they have such symptom , he said . Indeed , fight to eradicate the disease from affected areas loosely target the integral universe , he append .

Urobag showing the worm (left), The worm in a tray (right).

Though the disease is widespread in tropic areas , it ’s not something that mass in the United States need to worry about because the leech is not found here , Adalja say .

A close-up image of a mosquito ingesting a blood meal from a person�s hand.

A microscope image of Schistosoma haematobium

A computer illustration of mucor mold.

In this aerial photo from June 14, 2021, a herd of wild Asian elephants rests in Shijie Township of Yimen County, Yuxi City, southwest China�s Yunnan Province.

The reptile�s long tail is visible, but most of the crocodile�s body is hidden under the bulk of the elephant that crushed it to death.

a hyrax

Article image

borneo, pygmie elephant

An image comparing the relative sizes of our solar system�s known dwarf planets, including the newly discovered 2017 OF201

an illustration showing a large disk of material around a star

A small phallic stalagmite is encircled by a 500-year-old bracelet carved from shell with Maya-like imagery

a person holds a GLP-1 injector

A man with light skin and dark hair and beard leans back in a wooden boat, rowing with oars into the sea

an MRI scan of a brain

view of purple and green auroras in a night sky, above a few trees