Necatosis is a parasitic disease from the group of ankylostomiasis, which is common in countries with a tropical and subtropical climate. Necatotropic pathogens are small round worms Necator americanus (an americanus nekator), which parasitize in the small intestine of humans, as well as some animals. Larvae of nekatorov develop in the soil under the condition of high humidity and temperature 14 - 40 ° C, where they actively move in different directions.
Ways of infection with non-carorisis
Invasion can occur in two ways:
- Contact (percutaneous, percutaneous) path of infection - penetration of larvae of nekatorov through the pores of the skin in contact with the soil (often through the skin of the limbs). Once in the body, larvae of helminths penetrate into the blood vessels and are transferred to the lungs with blood. Further, with phlegm, when the larva begins to cough, they enter the oral cavity, swallow up and end up in the stomach, and then enter the intestine.
- Fecal-oral route of infection is the penetration of helminth eggs, excreted into the soil with feces, into the human body through the oral cavity with the use of poorly washed vegetables, fruits, and contaminated water. In this case, there is no migration of larvae along the body, they reach the duodenum, where they begin development to the sexually mature stage.
Symptoms of nikatorosis
The incubation period of the disease can last from 40 days to 2 months. Dyspeptic phenomena, allergic symptoms and the development of anemia are characteristic for non-katorosis. At a percutaneous penetration such displays are observed:
- redness of the skin;
- burning sensation, itching;
- various eruptions (papular, pustular, erythematous, etc.).
During the migration of worm larvae through the respiratory tract, catarrhal phenomena are often observed, dyspnea, wheezing, and bronchitis, pleurisy, and pneumonia are also possible.
Invasion of the gastrointestinal tract is accompanied by such symptoms:
- heartburn ;
- absence or increase of appetite;
- nausea;
- vomiting;
- pain in the abdomen;
- diarrhea.
Attaching to the walls of the intestine, nekatory cause the appearance of ulcers and erosions. This leads to the development of bleeding, which is the cause of iron deficiency anemia. The life of parasites in the intestine is about a year, but some helminths can live for several years.
Treatment of non-katorosis, as well as other types of ankylostomiasis, ascariasis, toxocarosis, etc., is carried out with the help of anthelmintic agents of a wide spectrum of action.