Types of worms in humans pictures, symptoms and treatment

Helminths (worms) – a huge class of parasitic worms that live in humans, animals and plants. Helminths, parasitic worms, feeding on the internal resources of the body "boss" not only weaken the body, but also contribute to the development of other related diseases.

Strangely enough, but almost every second person – the carrier of one of the types of worms and not even aware of it until complications occur or will be conducted an additional examination.

Depending on the climatic zones, in different continents have very different worms. On the territory of the Russian Federation there are about 20 species of worms.


Also, worms are divided by way of transfer from organism to organism:

  • biohelminths – transmitted from animals;
  • contagious – transmitted from an infected person;
  • geohelminths – the larvae remain in the soil.

In contact with the larvae in the body, they travel around the body by the bloodstream and deposited in the organs.

Most often, the worms settle in different parts of the intestine.

Classification at the place of settlement of parasites:

  • translucent worms – live in the hollow organs;
  • tissue – located in the tissues;
  • others can live in hollow organs, and in thicker fabrics.

Symptoms of worms in humans

The onset of symptoms in the body can be recognized by these symptoms:

  • the acute phase is manifested in a couple of days or weeks after infection and is the body's reaction to the introduction of alien parasite and metabolic products;
  • a chronic form. The infection becomes chronic through for quite a while.

The symptoms of the acute stage may occur on the second day or after 6 months, but often after 2 weeks:

  • fever;
  • yellowness in liver damage;
  • muscle pain;
  • inflammation of the lymph nodes;
  • enlargement of the spleen and liver;
  • swelling of the face;
  • there are even a nervous breakdown.

At the transition of the disease into the chronic form, there are such symptoms:

  • anemia;
  • abscesses of the organs;
  • exhaustion;
  • decrease in immunity.

Roundworms (nematodes)


Pinworms – representatives roundworms have a round shape, with a length of about 2 inches. Occur in both adults and children. Settle in the small intestine and develop from larval stage to adult for 2 weeks. Pinworms cause the disease enterobiasis.

Infection of pinworms is manifested by inflammation of the walls of the intestine, disturbed digestion, and toxins worms cause local haemorrhages.

types of parasites

Enterobiosis is manifested in the evening itching in the anus. Itching cause females to lay their eggs. When combing itching eggs get under the nails of a person and, thus, is transferred to the surrounding objects.

To get infected by pinworms is possible not only through contact with common objects with an infected person, but also through the vegetables in the garden (eggs are retained in the soil), cockroaches and flies can carry the eggs of worms.

When enterobiasis in women parasites can cause inflammation of the genital organs. Also become inflamed and scratching, which leads to staph.


Ascarids – round worms grow up to 40 centimeters and with a diameter of about 6 inches. Eggs of Ascaris when released into the soil it can store about a year before getting into a favorable environment for development. If the roundworm larva enters the host organism and begins to grow, it produces toxins that affect the lungs, liver. The larva travels throughout the body and affects the blood vessels and causes inflammatory lesions. Settles in the intestine and feeds upon its contents. A day can lay several thousand eggs.

Due to its considerable size roundworm in search of food can move into the ducts of the pancreas, bile ducts and liver, cause inflammation of the intestines can get into the gullet and block the airway. Cause such diseases as ascariasis.

Stay roundworm in the body can be recognized by these symptoms:

  • nausea and vomiting, abdominal pain;
  • fatigue
  • diarrhea, red worms in the feces;
  • allergic reactions.

Roundworms tend to curl into a ball, thus there is obstruction of the intestine, and as a consequence of the peritonitis.



The main way of infection is dirty hands and stored eggs in the soil. The presence of whipworm in the body leads to trichocephalus and is manifested by symptoms:

  • abdominal pain, loss of appetite;
  • diarrhea constipation changes;
  • sometimes blood in the stool;
  • iron-deficiency anemia.

The species Trichinella

The species Trichinella worm with a length of 5 millimeters. Strikes with food, in particular undercooked meat. Settles in the small intestine and there multiplies. The bloodstream the larvae spread throughout the body.

The species Trichinella causes the disease trichinosis with symptoms:

  • loss of appetite;
  • violation of the gastrointestinal tract;
  • abdominal pain;
  • nausea, vomiting.

If treatment is not carried out, only the symptoms are worse. Develop an Allergy as hives, rash, gives the complications in respiratory, nervous, cardio-vascular system.


This species of roundworms live in the stomach of dogs and feces the eggs fall on the soil. Externally similar to ascaris parasite, but grows only to 15 inches. Full life-cycle of toxocara is held in the body of the dog, so getting a favourable environment for human, the larvae perish, but have time to hurt. Hit the muscles, liver, lungs, heart, tissues of the eye, the brain, the disease toxocariasis.

The activity of toxocara larvae in the body is manifested by such symptoms:

  • temperature rise;
  • swollen lymph nodes and liver;
  • skin rash;
  • lung infiltrates;
  • shortness of breath, wheezing, dry cough;
  • mental disorders and seizures;
  • a blood test shows the presence of eosinophils.

You can confirm the diagnosis through scraping the affected area of the skin, a blood test for antibodies, liver biopsy.

Tapeworms (cestodes)

Cestodes (tape, wide worms) live in intestine, larvae may be distributed throughout the body.

A tapeworm

A tapeworm reaches 10 meters in length. With cracks on the head is attached to the surface of the intestine. The human body gets from raw freshwater fish as a larva and develops completely within a month. Causes disease difillobotrioz.


Symptomatic of the presence of the parasite in the body is expressed as:

  • beriberi a deficiency of vitamin B12, folic acid;
  • vomiting, nausea, diarrhea;
  • disorders of the gastrointestinal tract;
  • exhaustion;
  • the increase in temperature.

This parasite is nourished by absorption of nutrients to the surface all his considerable body. At the point of attachment broad tapeworm develops necrosis. In Calais appear segments (containing eggs) of the worm and its eggs.

Beef tapeworm

Beef tapeworm (tapeworm) lives in the small intestine and is 7 meters in length. Bovine tapeworm larvae infect man by eating undercooked beef. The larvae are easy to spot in meat because their size is about 5 mm. into the human body, the larva grows for 3 months. Propagated by means of segments, which contain up to 150 thousand larvae. Such segments on the body of the bovine tapeworm about 2 thousand. These segments independently and come out at night from the anus and spread over the bed.

The presence of this worm can cause disease beef tapeworm infection, which is manifested symptoms:

  • exhaustion;
  • bowel disorder;
  • loss of appetite, nausea, vomiting;
  • allergic reactions.

Pork tapeworm

Pork tapeworm can be confused with a bull, but the size of his modest – 2.5 meters. And the number of segments of this parasite are also smaller – about 1 thousand. The worm head has suckers and a proboscis with hooks, which is attached to the thicker of the intestines. The segments no abilities attached to the walls of the intestine, come out with feces.

You can become infected through raw meat and fat. This helminth causes disease shadowy and cysticercosis. Symptomatology depends on the number of worms in the body. A large number of parasites can lead to blockage of the intestine that can be treated only surgically.


Pets (dogs, cats) can share with their human family parasites such as Echinococcus. Causing the disease echinococcosis. The eggs of this helminth attached to the fur of the animal on the street from cal. This tiny worm has only 4 create.

The parasite gets into the human body via water, unwashed wild berries and garden vegetables, when stroking the animal worm eggs are transferred into the hands of a human, but can also settle in the brain, bones, kidney.

The blood worm larvae get into the lungs, the liver. Settling in to a body, the parasite forms a bubble around which is growing a cyst that's pressing in the process of growth, the organ and disrupts its functional capacity. Inside the cysts are larvae. Squeezing a cyst of the organ can lead to its necrosis.

Symptoms depend on where the parasite is settled, which organ is damaged. Often the cyst can be diagnosed using ultrasound. And related symptoms in the localization in the right lobe of the liver: symptoms of cholecystitis, pain in the side. If the cyst in the left lobe of the liver, then there is heartburn, vomiting, belching. With the defeat of the bile duct is jaundice.

Cyst rupture have an allergic reaction up to anaphylactic shock.

Flukes (trematodes)

Cat Fluke

A representative of this class of worms is cat Fluke. This type of worms in children is widespread in the district reservoirs. Helminth eggs with the feces fall into the water in which the striking shellfish and fish. Poor heat treatment or insufficient salty fish contribute to the infection of human opisthorchiasis caused by the cat's Fluke.


The bloodstream the parasite is distributed in the bile ducts, liver, pancreas, gall bladder. The acute phase depends on the location of the infection:

  • weakness;
  • allergies;
  • inflammation of the bile ducts;
  • possible yellowness of the skin;
  • vomiting, nausea;
  • pain throughout the body;
  • bowel disorder;
  • tremor of the limbs.

Without treatment, a month later, the symptoms subside, but it means that the disease passed into a chronic form. Worms attached to mucous membranes of the suction device and the point of attachment develops inflammation. With a large number of eggs of worms and clogged ducts and developing inflammation, abscesses, organ dysfunction, cirrhosis of the liver.


Shistosoma (blood flukes) person is infected through the pores of the skin through contact with infected fresh water. Are the causative agent of schistosomiasis. Unlike other parasites, Schistosoma residing in the venous system, where they reproduce.

This kind of parasites is more common in Africa, South America, Southeast Asia, the Middle East. The length of the worm reaches 26 mm, volume up to 0, 6 mm.

The symptoms appear as reactions to eggs of helminths:

  • enlargement of the spleen, lymph nodes;
  • disorder of the intestine.

The symptomatology is slightly different depending on the location of the clusters of schistosoma:

  • in urinary bladder inflammation, abdominal pain, blood in the urine;
  • in the bowel are polyps, diarrhea;
  • in the liver – enlargement of the spleen, liver, ascites;
  • in the nervous system – headaches, amnesia, disorientation.


The roundworm Ancylostoma is also common in Africa and East Asia. Is the causative agent of hookworm. Place of residence – 12-perstny gut. The length of the worm about 14 millimeters. Fed by nutrients that it extracts from the intestinal wall. A person can be infected not only through unwashed vegetables and dirty hands, but also through the skin when working with the earth, walking on the grass barefoot. The parasite through the blood vessels gets to the liver, lungs, heart.

a tapeworm

Ankylostoma infection manifests these symptoms:

  • belching, nausea, heartburn, vomiting, diarrhea;
  • headaches, dizziness;
  • cough, dyspnea, pneumonia, pain in the heart;
  • fatigue, chronic fatigue.

Hookworm causes complications: hepatitis, ulcer 12 duodenal ulcer, bronchitis, laryngitis, endocarditis. Verify the diagnosis by using blood tests, fluoroscopy, x-ray.

Diagnostic methods

Because the symptoms when infected by different kinds of worms are also different, established methods of diagnosis. First and foremost, the doctor collects the medical history of the patient. Then blood tests, urine, bile, feces, sputum, skin scrapings and biopsy of internal organs. Also for diagnosis is shown holding ultrasound, MRI, fluoroscopy.