Ancylostoma Duodenale: Appearance, Life Cycle And Parasite Treatments

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Ancylostoma Duodenale: Appearance, Life Cycle And Parasite Treatments
Ancylostoma Duodenale: Appearance, Life Cycle And Parasite Treatments

Video: Ancylostoma Duodenale: Appearance, Life Cycle And Parasite Treatments

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Video: Hookworm, Causes, Signs and Symptoms, Diagnosis and Treatment. 2023, February

Page content

  • What does a worm look like
  • Life cycle
  • Infection routes
  • Signs of hookworm infection
  • Treatment
  • You can defeat parasites!

Ancylostoma duodenale is a worldwide parasite that causes hookworm disease.

A distinctive feature of the hookworm is the ability to penetrate the human body through the skin. To prevent infection with this parasite, it is important to know all its features.

What to do in such a situation? To get started, we recommend reading this article. This article details the methods of dealing with parasites. We also recommend contacting a specialist. Read the article >>>

What does a worm look like

Ancylostoma duodenale is also called the human hookworm because the nematode parasitizes the human intestine. Some of the members of this genus can also infect animals. However, they are not capable of causing harm to a person, with the exception of the development of a temporary allergic rash.



Male hookworms grow up to 11 mm in length and 0.5 mm in thickness, females - up to 13 mm in length, 0.6 mm in width. The parasite's digestive system consists of:

  • oral capsule;
  • suction pharynx;
  • intestines;
  • rectum.

The cheek capsule is equipped with sharp teeth. The life span of the helminth is up to 8 years.

Life cycle

The eggs of the parasite are released into the environment with feces. Under favorable conditions free-living larvae grow from them. They feed on bacteria that live in areas of large accumulation of organic matter.

For development to a sexually mature individual, the larvae undergo two molts and acquire a filarial shape. The last molt takes place directly in the human intestine, where the parasite takes on a sexually mature form.

The parasite attaches itself to the intestinal walls, cuts through them and feeds on blood. This process takes place almost continuously. The worm passes blood through itself and out through the anus. As a result, the body is depleted, and a chronic form of anemia develops. The entire cycle from egg to sexually mature worm takes 1-2 months.

Life cycle
Life cycle

Infection routes

Free-living larvae that have grown in soil or plants enter the human body through the skin. Often, infection occurs through the feet in the areas where sweat glands and hair follicles are located.

The larvae penetrate into the lymphatic, circulatory system, migrate through it through the internal organs starting from the liver and ending with the oral cavity. Once in the mouth, the host swallows the larva and, it enters the small intestine, where it matures to a sexually mature individual.

In rare cases, the invasion occurs through contact with infected pets or eating meat that has not undergone high-quality heat treatment.

Signs of hookworm infection

Primary symptoms The first symptoms of infection develop 40-60 days after the end of the incubation period. Initially, the symptoms are mild, but after reaching puberty they are aggravated.

If the parasite enters the body through the skin, an allergic rash, itching, and burning develops. Skin infection is dangerous because the parasite can bring into the body with it pathogenic microflora, which causes serious infectious diseases.

The main Symptoms of invasion depend on the individual characteristics of the human body, however, often these are:

  • abdominal pain;
  • dysfunction of the digestive, cardiovascular systems;
  • heartburn, belching;
  • flatulence, diarrhea;
  • headaches;
  • dizziness;
  • dyspnea;
  • cough;
  • disruptions of the menstrual cycle;
  • impotence, infertility;
  • general weakness;
  • increased fatigue;
  • increased body temperature;
  • baldness;
  • inflammation of the eyes;
  • unstable psycho-emotional state.
Secondary Also, the patient may experience intestinal bleeding, deterioration of blood clotting. Bleeding wounds develop at the site of the worm's penetration under the skin.

If the infection occurred in a pregnant woman, then there is a high probability of fetal death, miscarriage. If the fetus survives, the child is born with a variety of pathologies. A slowdown in mental and physical development is also possible.


The treatment regimen is selected only after an accurate diagnosis has been made. Therapy is aimed at eliminating the root cause of the disease and the accompanying symptoms. Treatment must be supervised by a doctor. To eliminate the mild form, outpatient therapy is sufficient, severe - inpatient.

The patient is selected various anthelmintic drugs, which have serious side symptoms. Therefore, self-medication is strictly prohibited.

In addition to antihelminthic agents, the patient is prescribed:

  • iron preparations;
  • vitamins;
  • immunostimulants;
  • sedatives;
  • antihistamines.

In rare cases, treatment with folk recipes is allowed, but only in agreement with the doctor and if appropriate. It is important to note that folk remedies cannot cure the disease on their own, they only complement the basic therapy regimen.

Ancylostoma duodenale is a fairly common helminth that provokes the development of serious health problems. The problem can be eliminated in a short time if you contact a medical institution in a timely manner.

Therefore, if negative symptoms are detected, it is better to immediately seek help, and not self-medicate or, even worse, ignore the disease.

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