Parasites in the human body

Human parasites are parasites whose infection is the subject of a person. The general definition of the word "parasite" applies not only to multicellular and protozoa, living at the expense of their owner and to the detriment of the latter, but also viruses, bacteria and fungi of similar qualities. According to the historical tradition and from the point of view of medical parasitology, it is customary to be called any beings leading to a parasitic lifestyle, except for viruses and bacteria of similar qualities.Parasites in the body

Parasites include many helminths, fungi, viruses, protozoa, worms, crustaceans, cobwebs, shaped, insects. Parasite owners can be bacteria, the most simple, plants, animals and humans. The parasites undergo a complex cycle of development: sometimes they need a change of 2-3 owners whose body is intermediate (helminths pass the stages of the larvae) or the end (helminths become invasive).Of the story:

The study of parasites in ancient people is based on stool study and other fossilized materials. The most parasites found in humans are Paragonimus Westermani eggs from the north Chile, found in the hardened stools and dates from about 5900 BC. , In Peru - nematode eggs from 2330 BC and Egyptian mummies dating from 2000, 1250 and 1000 years. Bc. E. They contained an egg for a police, along with a well -preserved female worm.

In Berlin, for the period 1866-1875. 16% of all open carcasses contain worms of worms. Bull Taperly (Taeniarhynchus Saginatus) was especially widespread where raw meat was eaten. In St. Petersburg, according to Kessler, 3, 66 % of the persons investigated by him suffer from this parasite (1888). Pork teckia (Taenia solium) is found everywhere in areas where they eat raw or semi -even pork. In St. Petersburg, about 3 % of the population suffered from this parasite in the late 19th century. When they began to avoid the use of raw meat, the rate of disease decreases exclusively, for example in Denmark from 53 % to 20 % for 10-12 years. Dypilidium caninum lives in the gut of dogs and cats and rarely in the gut of children. The cases of infection of children in the late 19th century were known from England, Germany, Denmark: The infection occurs exclusively when fleas were swallowed.

Parasites and their discard(Products of their lives) are the most powerful poisons for the human body. They cause severe acidification and thickening of the blood and the entire internal environment. They cause the most serious health disorders. From bronchitis to oncology. Destroy a person's psyche, deprives peace and sleep. In the body of the child, parasites prevent the normal development of the child's nervous system and with a long current disease contribute to mental and physical backwardness.Classification

Through distribution:Geogelminthosis

  • Ubiquette - meet everywhere.
  • Tropical - distributed in tropical climatic zones.

    Regarding biological and epidemiological characteristics:

  • Geohelmints are a disease in which helminths first develop in the human body and then on an inanimate substrate, more often in the ground.
  • BioHelminths is a disease in which a biological cycle of helminths, except for humans, must be carried out in the body of other living things. Distinguish the final owners in which the helminths develop to a sexually mature stage, as well as to the intermediates, where the parasite is in the stage of the larva or its reproduction is not sexual. The one is more often the final owner, more rarely -intermediate.
  • Contact helminthiasis is a disease in which parasites are distinguished from the human body mature or almost mature, resulting in the infection of another person is possible or re -infecting himself (automatic invasion, re -invasion).

    Depending on the location of the parasite in the body:

  • Enlightenment - life in the cavity of the intestine and other voids of a person (eg ascaris, ribbons).
  • Material - life in tissues (sistematis, ehinokokkoz).

    In place of the owner's stay:

  • External: mosquitoes, blind, leeches, lice.
  • Internal(Helminthias):Roundworms(Nematodes - Ascarids, Filaria, Vlasov, Pinworms, Strungyloids, Ancylostomidae, Trichinella);Flatworms:
  • Trematodes (plates - cat bickelter (opisthorchis), cloner, fasciola, schistosomes);
  • Cestodi (red worms - a bull and pork, dwarf, wide strip, echinococcus).
  • Bacteriosis(Leptospira, Staphylococcus, Streptococcus, Shigella).
  • Protosy(Amoebas, Giardia, Trichomonas, often owners of Chlamydia and AIDS virus).
  • Mycosis(Fungal diseases) - Candida, Cryptococcus, Penicillium.Ways of infection with helmetsHow do parasites enter?

    Parasitism can be infected not only through dirty hands. Animal hair is the carrier of worms (ascarid and toxocar), lamblia. Pinc worm eggs that have fallen from the viability of the wave to 6 months and through dust, toys, carpets, linen and mats and hands fall into the food tract. Dog through wet breathing spreads eggs at a distance of 5 meters (cat - up to 3 meters). Dog fleas also tolerate worm eggs. Askarid's eggs enter the body through poorly washed vegetables, fruits, berries, green, dirty hands and are also spread in flies. And improperly boiled barbecue or home -made lard is the path of trichinosis infection; Poorly salted fish, caviar - optistorchiasis and wide band.

    So, there are several ways to enter the body:

  • Alimentary (through contaminated food, water, dirty hands);
  • Contact house (through household items, from infected family members, pets);
  • Portable (through blood -administer insects);
  • Percutaneous or active (in which the larva penetrates the skin or mucous membranes during contact with infected soil when you bathe in open tanks).Symptoms of parasites

    The infection does not need to manifest itself in any way. Sometimes one feels healthy, despite the invasion, thanks to the strong immunity. Some individual time will be healthy. Then, respectively, the disappearance of immunity (collapse can occur at any time stress, surgery, illness) - the quiet signals will still begin to serve. It is urine with odor, acne on the skin, stubborn cough with clean lungs, unstable stools with a pungent odor or constipation, gas formation, an unpleasant odor from the mouth. The most specific manifestation of the presence of helminths in the body is the bruxism (a night rattle of the teeth). Night salivation, usual nausea, the perversion of the appetite of night hunger, tireless hunger, addiction to sweet and acidic foods and air coating. Children have a decrease in appetite or selective appetite. Sometimes people with increased appetite are found, but at the same time weaken. Common signs of parasitic invasions

    Constipation, bile stagnationAllergy

    Some worms, due to their shape and large size, can mechanically close the lumen of the intestine, the ducts of the biliary tract, which leads to a deterioration of the peristalsis, the formation of constipation, complete or partial intestinal obstruction. The invasion of Hlybon can cause obstruction of the common bile duct, leading to difficulty in the leakage of bile, mechanical jaundice.

    Diarrhea

    A number of parasites, especially protozoal, produce prostaglandin -like substances that lead to sodium and chlorides to loss, which in turn provokes diarrhea - frequent watery movements of the intestine.

    Stomach and intestinal discomfort syndrome

    Parasites living in the upper intestine cause inflammation and lead to bowel disorders, bloating. This leads to a decrease in the absorption of nutrients. As a result, the fats that need to be absorbed in the small intestine fall into the colon, provoking cramps, alternating constipation and diarrhea.

    Pain in joints and muscles

    Parasites can move around the human body to establish themselves in the most convenient places, such as in joint fluid and in the muscles. Tissue inflammation is the result of their injury with parasites or the body's immune response to their presence. At the same time, one experiences muscle and joint pain.

    Allergy

    Parasites can disrupt the normal permeability of the intestinal mucosa, which increases the risk of penetration of large non -covered particles of food into them. This activates the body's immune response - the level of eosinophils - the protective blood cells of our body that contribute to the development of allergic reactions - increases. Parasites cause increased production from the body of immunoglobulin is, which increases allergic reactions.

    Troubled skin

    Intestinal parasites can cause allergic skin reactions - atopic dermatitis, urticaria, eczema. Most often, inflammatory changes on the skin can be the result of the presence of microorganisms of protozoa (lamblia, mushrooms) and ophorhis.

    Change of body weight

    Weight fluctuations (both more than normal and less) can be the result of a parasitic disease. Weight loss is due to the fact that digestion is impaired in the body as there is an "internal consumer". Obesity is also a consequence of the "robbery" of the human body with a helminth invasion. The feeling of hunger occurs with a sharp drop in blood sugar due to the activity of helminths, their toxic effects on the body.

    Anemia

    Many intestinal helminths are attached to the intestinal wall, damaging it, causing a sufficiently greater blood loss, leading to anemia.

    Nervousness, sleep disorder

    The toxic substances of the vital activity of parasites irritate the central nervous system, causing increased anxiety and nervousness. Frequent awakening in the middle of the night, especially between 2 and 3 hours, is also the result of the body's attempts to get rid of toxic substances through the liver.

    "Chronic fatigue syndrome"

    "Chronic Fatigue Syndrome" includes weakness, causal decrease and fever, emotional instability, loss of concentration and poor memory. These symptoms can be the result of anemia, intoxication, lack of nutrients in the body caused by parasites.

    Once you find your family members for several symptoms, subjected to the diagnosis of parasitism and carry out a preventative course of treatment for disinfection.LaboratoryDiagnostics

    Recently, the presence of parasites is only determined by the method of duodenal sound tests and sends tests using microscopic studies aimed at detecting selected helminths or their fragments, eggs and larvae. Eggs and larvae of helminths parasitic in the liver, biliary trails, pancreas and duodenum are found in the content of bile and duodenum; Of the intestinal forms of helminth they examined stool samples; In the case of suspicion of Paragonimoz, the heart is also examined and urine - urine on genitorological histomosis. But the reliability of these studies depends on the professionalism of employees - whether the laboratory assistant will notice in the microscopic examination of parasites. In addition, if the parasite does not delay the eggs at the moment when the inspection is carried out, its presence will be unnoticed even with a high qualification of the laboratory assistant. Often with only 8-10 attempts you can get a positive result.

    Today, there are immunological studies that allow you to determine in the blood of an infected person the presence of antigens and antibodies of parasites of different species. The reliability of such analyzes depends on the life cycle of parasites and their amount in the body.

    The most vulnerable of the effects of parasites are children. They are infected with different types of parasites through dirty hands, sand, soil and water. Sometimes the infection of the child can occur in intrauterine, as the simplest larvae of bacteria, viruses, candida and helminths can penetrate the fetus through the placenta with blood flow, as well as during birth through the birth canal.

    Do not risk the health of your children, hold preventive courses for decontamination.