Helminthiasis, or intestinal and fasciolar worm diseases, are a group of infectious diseases caused by parasitic worms (helminths) in the human body. These pathogenic organisms can cause a wide range of clinical manifestations, from asymptomatic to severe forms accompanied by complications in various organs and systems. Helminthiasis is common in all parts of the world, and its epidemiological significance is due not only to the acne cell, but also to the fate of the person, culture, and living conditions. Parasites enter the body in various ways, including oral, transmissible, and contact. There are different classes of helminths, among which the most common are nematodes (roundworms), cestodes (tapeworms), and trematodes (flatworms). Diagnosis of helminthiasis is based on clinical signs, laboratory tests, and modern imaging methods.
History of the disease and interesting historical facts
Helminthiasis has been known to mankind since ancient times. The first mentions of parasites are found in ancient Egyptian papyri, as well as in the works of Hippocrates. It is interesting to note that some scientists suggest that helminths could have influenced the development of culture and medicine, since the symptoms of many diseases resembled infections caused by parasites. In the Middle Ages, helminthiasis was considered something supernatural, leading to exhaustion and loss of vitality. Scientific understanding of these diseases began to form only in the 18th-19th centuries, when certain types of helminths were discovered and methods for their diagnosis and treatment were established. In particular, the works of such scientists as August Friedrich Müller and Karl Rudolf Virchow laid the foundations of helminthology as a science. In the 20th century, scientific discoveries and the development of pharmacology led to the creation of effective methods for the treatment of helminthiasis, which radically changed the fight against these diseases at the global level.
Epidemiology
According to the World Health Organization, helminthiasis is one of the main causes of morbidity in the world, affecting about 1.5 billion people, which is almost a quarter of the world's population. The highest incidence rates are observed in countries with tropical and subtropical climates, where unfavorable sanitary conditions are common. In particular, more than 300 million people suffer from ancylostomiasis, and up to 200 million from schistosomiasis. There is also data on the high incidence of pinworms in children's groups, especially in countries with poor sanitation and hygiene. Experts note that helminthiasis causes significant damage not only to health, but also to the economy of countries, since it leads to a decrease in the working capacity of the population and the need for medical expenses.
Genetic predisposition to this disease
Modern research shows that genetic predisposition to the development of helminthiasis has its own significant significance. However, specific genes and their mutations associated with susceptibility to helminths have not yet been sufficiently studied. The influence of polymorphisms of genes responsible for the body's immune response is usually assumed, with special attention paid to genes associated with the immune response to parasites, including HLA class genes and cytokines. People with certain genetic changes may have increased susceptibility to certain helminths, which contributes to their reproduction and determines the clinical picture of the disease.
Risk factors for the development of this disease
Helminthiases have a number of risk factors that contribute to their occurrence, among which the following stand out:
- Improper observance of hygiene and sanitation rules.
- Consumption of under-processed (thermally or chemically) foods, especially meat and fish.
- Lack of access to clean drinking water, which is especially relevant for developing countries.
- Environmental factors such as water and soil pollution.
- Incorrect implementation of prevention and control.
- Confinement in overcrowded conditions such as prisons or institutions for children.
- Seasonal factors: increased incidence is recorded in summer and autumn.
- There is a severe lack of educational work among the population about the ways of transmission of helminthiasis.
- Travel to endemic areas and exposure to potentially infected people or animals.
Diagnosis of this disease
Diagnosis of helminthiasis includes several stages. The main symptoms that may indicate the presence of helminths include:
- Gastrointestinal disorders such as diarrhea, constipation, abdominal pain, nausea and vomiting.
- Weakness and fatigue due to anemia caused by the paralytic activity of helminths.
- Skin manifestations such as rash or itching.
- Allergic reactions similar to those of other allergies.
- Nervous system disorders, including aggression and insomnia.
Laboratory investigations often include microscopic examination of stool for helminth eggs, immunological tests for antibodies, and blood tests for hemoglobin levels and eosinophilia. Radiological examinations may be performed to detect structural changes in organs, the atmosphere of infection, and most pathologies should be included in the differential diagnosis. The differential diagnosis should take into account diseases such as ulcerative colitis, Crohn's disease, digestive disorders, and parasitic infections.
Treatment
In the treatment of helminthiasis, both medicinal and surgical approaches are used. General principles of treatment include:
- The use of anthelmintic drugs aimed at destroying helminths, such as albendazole and mebendazole.
- Correction of concomitant disorders such as anemia and allergic reactions.
- In severe cases, surgery may be required to remove large parasitic growths or repair damaged tissue.
- Final anti-relapse therapy, which includes adherence to hygiene standards and repeated tests to prevent re-infection.
List of medications used to treat this disease
Some of the more common deworming medications include:
- Albendazole
- Mebendazole
- Praziquantel
- Ivermectin
- Niclosamide
- Decaris
Disease monitoring
Monitoring of helminthiasis includes regular control stages to assess the effectiveness of treatment and prevent its relapse. The prognosis depends on the type of helminth, the state of the patient's immune system, and the presence of concomitant diseases. Complications can be serious, including anemia, intestinal obstruction, and microbial infection. Therefore, it is important to monitor your health and seek medical help immediately if symptoms occur.
Age-related features of the disease
Helminthiasis may manifest itself differently in different age groups. Children are usually most susceptible to pinworms. They are most often infected in children's groups and may experience a combination of symptoms, such as anal itching and irritability. In adults, helminthiasis may be more latent, but symptoms may manifest as a reduced immune response and chronic fatigue. Older patients tend to have a more severe course of the disease due to a weakened immune system and the presence of concomitant pathologies.
Questions and Answers
- How can I prevent helminthiasis? Maintaining good personal hygiene, carefully handling food, and avoiding contact with potentially infected people and animals will help reduce the risk of infection.
- What tests are needed to make a diagnosis? The main tests are microscopy of feces for helminth eggs, blood tests for special antibodies and inappropriate symptoms of the disease.
- How long does treatment for helminthiasis last? Treatment usually takes from several days to a week, depending on the type of helminth and the severity of the disease.
- Do I need to take tests again after treatment? Yes, a follow-up examination is necessary to assess the effectiveness of therapy and prevent relapse.
- Can helminthiasis be dangerous to health? Yes, if not treated in a timely manner, helminthiasis can lead to serious complications, including anemia, intestinal obstruction and other serious conditions.
Dr. Oleg Korzhikov recommends the following to prevent helminthiasis: "It is important to follow basic hygiene rules, such as washing your hands before eating and after contact with animals. Avoid eating raw or undercooked foods. Regular testing for helminths is recommended, especially when symptoms appear or after traveling to endemic areas."
