It is difficult for the average person to imagine how many parasites can threaten their health. These "settlers" can live for years in the human body, literally sucking his life and poisoning him with his poison.
Types of parasites
From a medical point of view, parasites include unicellular and protozoa. Depending on their habitat, they are divided into exoparasites (lice, insects and others) and endoparasites.
Endoparasites have their own subspecies:
- Larvae laid by insects.
- Protozoa (amoeba, lamblia).
- Helminths (worms or worms).
Ways of infection
Each parasite has its own way of penetrating the human body. The most common way is to feed, that is, with the help of water or food. Many insects can carry larvae of parasites, contaminating the environment. By consuming raw water, unwashed and not carefully prepared food, a person becomes infected with parasites.
Some species are transmitted directly by person-to-person contact - this path is called home contact. For infection, it is not necessary to have direct contact with the distributor, just use household items. This is how enterobiasis and some other parasitic forms are transmitted.
An equally popular vector-transmitted infection route. In this case, the parasites are carried by blood-sucking insects. Thus, they can be obtained after being bitten by a mosquito or other insect.
The last way parasites enter is via the percutaneous route, the second name is active. The infection occurs by the larvae penetrating the mucous membranes and the skin. This is due to contact with contaminated soil or water in a body of water.
Symptoms
The parasites of the human body can live for a long time and not manifest. The symptoms, of course, will be, but they are disguised as other diseases. That is why a person for a long time may not know that he is infected.
Symptoms appear more often depending on the location of the larvae, but the body can signal infection and other manifestations. The most common are:
- Flatulence,and constant, indicates the presence of worms in the small intestine;
- Diarrhea.Caused by the absorption of sodium chloride by parasites;
- Constipation.Entangled worms can obstruct some organs;
- Pain in the joints and muscles.These pains are caused by the migration of larvae through the human body, to which the immune system reacts in this way;
- Allergy.The parasites themselves are an allergen to the body and damage to the stomach walls contributes to indigestion and the entry of food molecules into the blood;
- The appearance of granulomas.It is a type of neoplasia resulting from the involvement of body cells by destroyed parasite eggs;
- Dermatological manifestations;
- Anemia.Often, people suffer from anemia precisely because of the activity of parasitic forms;
- Sudden fluctuations in weight;
- Mental disorders.In the process of vital activity, parasites release toxins that negatively affect the host's nervous system. The consequence of poisoning the body can be neurosis, depression, anxiety;
- Bruxism.This is gnashing of teeth during sleep. This is the response of the nervous system to the appearance of foreign bodies. But this fact is not proved conclusively by science;
- Sleep disorder.As a rule, it arises from uncomfortable sensations. An example would be their oxymorons here, which lay their eggs at night. Coming out of the rectum, the moth secretes a toxin that causes intense itching;
- dysbacteriosis;
- Oncological diseases;
- Chronic fatigue.It occurs due to the lack of nutrients, which negatively affects the state of the body;
- Diseases of the respiratory tract.Several parasites can live in the respiratory tract, causing disease. Other parasites cause colds by moving through the respiratory system;
- Immunity diseases. The absorption of most vitamins by parasites leads to a weakening of the body's barrier functions and an increased likelihood of contracting disease.
But there are also characteristic symptoms of the presence of parasites in a specific human organ. For example, papillomas, the appearance of bald spots on the head, cracked heels, etc. , may indicate the life of parasites in the liver. In addition, the presence of certain types of parasitic forms can cause a certain type of disease in humans.
Detection of diseases
Unfortunately, some doctors deny their functions and do not send a person for special studies to identify parasites in the body. The most common analysis is the delivery of feces to worm eggs. The fact is that parasites can inhabit several organs.
There have been cases where worms have been found in the human brain and eyes. Is there a high probability of putting your brain eggs in the stool? Probably not. Even if there are worms in the intestines, parasite eggs may not be found.
First, the doctor must perform a visual examination of the patient. Externally, one can suspect the presence of human parasites. The easiest way to detect them is to have a blood test to detect special antibodies against worms.
Description of human parasites
There are several dozen types of parasites that inhabit the human body.
Worms or helminths are a kind of worms.Its size depends on the species, for example, female roundworms reach 40 centimeters. Some species can exceed 10 meters in length. The favorite habitat of worms is the intestines, but they are often found in other organs, even the brain.
For example, roundworm larvae circulate through the body, collecting nutrients and returning to the intestines, where they grow and reproduce. They usually live in Organs respiratory organs. The presence of ascaris in the human body is accompanied by disorders of the functioning of internal organs, body intoxication, allergic manifestations and even an increase in temperature.
Among the tapeworms is the pig tapeworm, which migrates to the brain through blood. 
This parasite enters the body through poorly processed meat products. This worm lives up to 20 years.
Pinworms most often develop in children, but are quite common in adults. These worms are small in size, reaching 1 cm in length. The spread of moth eggs occurs in a familiar way. The female leaves the rectum and lays the eggs in the outer folds of the anus. The toxin released by the female causes severe itching, which causes the eggs to fall into human hands and transfer them to all objects around them.
The second name of enterobiasis is the disease of dirty hands. Everyone who comes into contact with the carrier is probably infected. Therefore, when pinworms are found, it is recommended to treat the whole family.
Toxocarais a type of parasite that lives in dogs. They enter the human body and also thrive in it. Unlike these worms in the dog's body, human toxocars do not come out, but they affect many organs and cause certain diseases. You can become infected with toxocars in the soil, as the larvae of these worms leave with the dog's feces. But the parasite's eggs can also spread through the dog's wet breath.
Alveococcus and Echinococcusinfects the body in several ways. The danger lies in the fact that the larvae turn into cysts, which can be found in various internal organs.
Giardia is the simplest.Like pinworms, Giardia is the most common infection in children.
Not only do they reduce the child's immunity, but they also delay children's mental and physical development.
This list is far from complete. The main danger of parasites is that no one is immune to infection. Their secrecy leads to the fact that a person has been feeding on parasites for years without suspicion. Compliance with personal hygiene, constant cleaning of the accommodation with water and compliance with the rules for the heat treatment of meat products are not a bad infection prevention. It will be useful to have a medical examination and pass the necessary tests every six months in order to prevent the spread of parasites.