The human body is constantly exposed to external dangers. This is a different type of disease, infection, etc. One of the most common, serious problems is parasites. They enter the body completely unnoticed, the consequences can be very serious. It is important to know which parasites in the human body are the most dangerous, what are the health threats due to them. You can see the parasites in detail in the photo.
Different worms live all over the world, they are all divided according to the mode of transmission, the species. Parasitic worms are transmitted to humans mainly in the following ways:
- infected person;
- animals;
- soil, food, water;
- insect bites.
Worms are divided into several types:
- methyls;
- round;
- tape.
Worms are a very large class of parasitic worms that live in plants, animals and humans. They can live in hollow organs, thicker tissues, the tissues themselves.
Top 10 most dangerous parasites in the human body
- Schistosomes are dangerous parasites from tropical waters.
- Rishta is a worm that lives under human skin.
- Filariasis is a dangerous parasite of elephantiasis.
- Echinococci are dangerous larvae in the body.
- Whiskered Vandellia is a fish parasite.
- Roundworms are known to all worms.
- The beef tapeworm is a very large and long worm.
- Hookworm is a small harmful worm.
- Broad tapeworm - a danger to human intestines.
- Swine tapeworm is a dangerous disease.
Schistosomes - living in venous blood
The second name of the parasite is blood methyl. Infection occurs through the skin, contact with contaminated water. The disease caused by schistosomiasis is called schistosomiasis. 
They differ from other helminths in their habitat: they live and reproduce in the venous system. It is most common in South America, Africa, the Middle East, Southeast Asia. They are not large in size, length 2, 6 cm, diameter 0, 6 mm, which is clearly seen in the photo. One realizes that one is infected with the following symptoms:
- bowel disorder;
- enlarged lymph nodes, spleen.
But the symptoms are different, it all depends on the place of the body where schistosomes have accumulated:
- nervous system - disorientation, memory loss, headache;
- bladder - inflammation of organs, blood in the urine, abdominal pain;
- liver - ascites, organ enlargement, spleen;
- intestines - diarrhea, polyps.
Worm eggs are very dangerous, they pierce, damage the walls of lymph and blood vessels of various organs and tissues. In this way, the parasites can even get into the uterus, lungs, prostate and stomach. Worms, eggs clog blood vessels, leading to the formation of varicose veins, tumors, cysts. Helminths of this type can cause serious problems, including cancer of the bladder, liver, prostate, liver fibrosis. To avoid infection with the most dangerous parasites in the human body, it is very important to avoid swimming in tropical waters, to wash vegetables, fruits and hands before eating. Schistosomiasis can be treated conservatively if treatment is started early. In case of complications, operations are performed.
Rishta - subcutaneous worm
Dracunculiasis is a disease caused by this type of parasite in the human body. Infection occurs through the dirty water of tropical reservoirs in Asia and Africa. Usually people are infected, but there are cases of infecting dogs.
The worm enters the human body by ingesting contaminated water, where copepods, which carry the larvae of the lynx, live. Treatment only by surgery. Secondary infection of already injured skin is very dangerous.
Once in the body, the lynx literally gnaws through the tissues, intestinal walls, lives in the lymph vessels, subcutaneous fat. The worm can grow large in length, up to 80 centimeters. Strong abscesses appear in the areas of the body where the eyelids are located, and parasites can be found inside them. The disease is caused only by women, men die after mating. When the infected area of skin comes in contact with water, the female worm comes out a short distance and throws its larvae into the water. These larvae must be caught by crustaceans in order to survive.
Filariasis is a very dangerous parasite for the body
The worm's other name is filamentous. Of all the species, about 10 are preferred by humans, leading to filariasis. They were called a thread because of their appearance, the worms are very thin, like a thread, you can see this in the picture. 0, 3 cm in diameter, but they grow large in length, up to 50 cm or more. Hitting the body, they live in the subcutaneous tissue, body cavity, heart, blood, lymph vessels, every part of the body. Very often in hot countries.
They are transmitted by blood-sucking insects, sometimes ticks, which in turn become infected through the blood of an infected animal, a human. The danger lies in the fact that the most terrible worms can be detected when the disease has become chronic, it is almost impossible to cure. Accumulating, filariae block the lymphatic system, clog blood vessels, causing elephantiasis. The patient's legs become large, swollen excessively, to the point of inability to move, there are many pictures of people with this disease on the Internet.
Echinococcus is a great danger to humans and animals
This tapeworm lives in the intestines of dogs, wolves, rarely cats and can be easily transmitted to humans. 
Echinococcus larvae are one of the most dangerous causes of echinococcosis. Adult worm is 3 to 5 mm long, in the photo describing the parasite, it is clear that it has a head with shoots, hooks and segments. From the body of dogs, eggs come out with feces, sometimes falling on the wool.
Infection is also possible through livestock. The infection occurs in humans through the mouth, eating contaminated meat, dog saliva. The larvae penetrate further into the body, through the blood into the liver, where they live and reproduce. Rarely in the bones, muscles, lungs. As they develop, echinococci turn into large bubbles the size of a child's head. Depending on the neglect of the disease, treatment is carried out with drugs or in a timely manner, by removing the tissues of the organ along with the vesicles of the larvae.
Whiskered Vandellia - the smallest and most terrible
In general, this creature belongs to the fish, but is one of the most dangerous to the body. People are afraid of it because during bathing almost transparent, a small creature with a length of 15 cm can easily penetrate the urethra, genitals and anus. Then Vandelia is attached to the vessels and feeds on blood. Unfortunately, the only way to get rid of the parasite is through surgery.
Ascaris - the most famous worm in the human body
The parasite is widespread, often found in the human body. If the eggs of a human roundworm get into the soil, they can be stored there for almost a year until they move to a favorable environment. In the body, it releases toxins that affect the liver and lungs. The roundworm does not stop in one place, constantly travels through the body, affects blood vessels and causes inflammation.
The main habitat of the most harmful worm is the intestines, where the parasites live comfortably, eating the food that the infected person eats. They can pass into the pancreas, bile, liver, reach the esophagus, block breathing. One roundworm lays up to 1000 eggs a day. They grow quite large in length, up to 30 cm.
Tapeworm is the largest and most dangerous worm
This very large parasite lives in the small intestine, the pictures of tapeworms are just amazing. The body of the tapeworm consists of a head with shoots, a large number of segments, numbering from 2000 to 5000. The length of the worm is constantly increasing with increase, up to 10 meters. In the human body, without treatment, can live up to 20 years. It produces about 600 million eggs a year, up to 11 billion per life cycle.
Lives only in the small intestine of an animal, a human. The intermediate host through which a person becomes infected is cattle. Infection occurs through poorly processed, cooked or raw meat, milk, fish, in contact with pets.
Hookworm - harmful, dangerous worm
The worm is very common in East Asia, Africa, causing hookworm disease. The parasite lives in the human duodenum, does not grow large, maximum 14 mm. Infection occurs through dirty hands, vegetables, fruits, even through the skin, while working with the soil, when walking barefoot on the grass, the larvae penetrate the skin.
Once in the body, it enters the blood vessels, from there it goes to the liver, heart, lungs. Hookworm leads to serious complications, especially hepatitis, ulcers.
Wide ribbon - a dangerous parasite with a large long body
Infection with this worm occurs through fish if a person has eaten raw, poorly cooked fish, raw pike caviar or has been involved in the processing of infected fish, seafood.
Dangerous tapeworm grows to a length of 15 meters, it is very large, the body consists of a large number of segments - up to 4000, the head has shoots with which the worm is attached to the intestine. Looking at the picture of the worm, it's just hard to believe that it can live inside a person. The larva develops in just one month. Extensive tapeworm leads to a serious disease - diphyllobotriasis.
The patient has a severe deficiency of vitamins, as the worm feeds on all the nutrients in the body. His whole large body absorbs substances on its surface. At the place where the tapeworm sucked, necrosis begins. The most dangerous tapeworm can live in the human body for up to 10 years.
Pork tapeworm is a very harmful worm for the human body
This worm can be confused with beef tapeworm, but does not grow as large, with a maximum length of 3 meters. There are also fewer segments on the body, up to 1000. On the head of the worm there are shoots, a trunk with hooks. In this way the tapeworm is attached to the intestinal walls. It takes root in the body of pigs, rabbits, hares, dogs, camels, through which it reaches the person - the ultimate owner. Infection is permissible through the use of raw bacon, meat. It is very dangerous for eggs to enter the human body, as they become an intermediate master, a stage of the Finns occurs in it, which often leads to the most serious diseases and death.
The helminth causes diseases of cysticercosis, tapeworm. If there are many parasites, they clog the intestines, as a result of which the patient must be operated on urgently. They can penetrate the intestinal walls, enter the lymph vessels and enter the internal organs. Complications of disease lead to damage to the subcutaneous tissue, muscles, skin, spinal cord, brain, bones and internal organs. The most important thing is to carry out prophylaxis, carefully process the meat before eating. One must observe personal hygiene, prevention of helminthiasis.