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What Are Intestinal Worms?

Overview

Intestinal worms, also known as parasitic worms, are one of the main types of intestinal parasites. Common types of intestinal worms include:

  • flatworms, which include tapeworms and flukes
  • roundworms, which cause ascariasis, pinworm, and hookworm infections

Read on to learn more about intestinal worms.

Symptoms

Common symptoms of intestinal worms are:

  • abdominal pain
  • diarrhea, nausea, or vomiting
  • gas/bloating
  • fatigue
  • unexplained weight loss
  • abdominal pain or tenderness

A person with intestinal worms may also experience dysentery. Dysentery is when an intestinal infection causes diarrhea with blood and mucus in the stool. Intestinal worms can also cause a rash or itching around the rectum or vulva. In some cases, you will pass a worm in your stool during a bowel movement.

Some people may have intestinal worms for years without experiencing any symptoms.

Causes

One way to become infected with intestinal worms is eating undercooked meat from an infected animal, such as a cow, pig, or fish. Other possible causes leading to intestinal worm infection include:

  • consumption of contaminated water
  • consumption of contaminated soil
  • contact with contaminated feces
  • poor sanitation
  • poor hygiene

Roundworms are typically transmitted through contact with contaminated soil and feces.

Once you’ve consumed the contaminated substance, the parasite travels into your intestine. Then they reproduce and grow in the intestine. Once they reproduce and become larger in amount and size, symptoms may appear.

Risk factors

Children are particularly susceptible to intestinal worms. That’s because they may play in environments with contaminated soil, such as sandboxes and school playgrounds. Older adults are also at increased risk due to weakened immune systems.

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According to the World Health Organization (WHO), about 10 percent of people in the developing world are infected with intestinal worms. People in developing countries are at the highest risk due to drinking water from contaminated sources and because of decreased sanitation levels.

Diagnosis

If you have any of the above symptoms, and especially if you have traveled out of the country recently, you should make an appointment with your doctor. Your doctor may then carry out an examination of your stool. It may take several stool samples to confirm the parasite’s presence.

Another test is the “Scotch tape” test, which involves applying tape to the anus several times in order to retrieve pinworm eggs, which can be identified under a microscope.

If worms or eggs are not detected, your doctor may carry out a blood test to look for antibodies your body produces when it’s infected with a parasite. Additionally, your doctor may take an X-ray or use imaging tests such as computed tomography (CT) or magnetic resonance imaging (MRI) depending on the extent or location(s) of disease suspected.

Treatment

Some types of intestinal worms, such as tapeworms, may disappear on their own if you have a strong immune system and healthy diet and lifestyle. However, depending on the type of intestinal worm infection, one may require treatment with an antiparasitic medication. Serious symptoms shouldn’t be ignored. See your doctor if you:

  • have blood or pus in your stool
  • are vomiting daily or frequently
  • have an elevated body temperature
  • are extremely fatigued and dehydrated

Your treatment plan will be determined based on the type of intestinal worm you have and your symptoms. Tapeworm infections are usually treated with an oral medication, such as praziquantel (Biltricide), which paralyzes the adult tapeworm. The praziquantel (Biltricide) causes the tapeworms to detach from the gut, become dissolved, and then pass out of your body through your stool.

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Common treatments for a roundworm infection include mebendazole (Vermox, Emverm) and albendazole (Albenza).

Symptoms typically begin to improve after a few weeks of treatment. Your doctor will most likely take and analyze another stool sample after treatment is complete to see if the worms have disappeared.

Complications

Intestinal worms increase your risk for anemia and intestinal blockages. Complications occur more frequently in older adults and in people who have suppressed immune systems, such as people with HIV or AIDS infection.

Intestinal worm infections can pose a higher risk if you’re pregnant. If you’re pregnant and are found to have an intestinal worm infection, your doctor will determine which antiparasitic medication therapy is safe to take during pregnancy and will monitor you closely while you are treated during pregnancy.

Stomach Worms Removal Surgery (Intestinal parasite)

Intestinal parasites are parasites that can infect the gastro-intestinal tract of humans and other animals. They can live throughout the body, but most prefer the intestinal wall. Means of exposure include ingestion of undercooked meat, drinking infected water, and skin absorption. The two main types of intestinal parasites are those helminths and protozoa that reside in the intestines (not all helminths and protozoa are intestinal parasites). An intestinal parasite can damage or sicken its host via an infection which is called helminthiasis in the case of helminths

.

Signs and symptoms

Signs and symptoms depend on the type of infection. Intestinal parasites produce a variety of symptoms in those affected, most of which manifest themselves in gastrointestinal complications and general weakness. Gastrointestinal complications include diarrhea, nausea, dysentery, and abdominal pain. These symptoms negatively impact nutritional status, including decreased absorption of micronutrients, loss of appetite, weight loss, and intestinal blood loss that can often result in anemia. It may also cause physical and mental disabilities, delayed growth in children, and skin irritation around the anus and vulva.

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Types

The major groups of parasites include protozoans (organisms having only one cell) and parasitic worms (helminths). Of these, protozoans, including cryptosporidium, microsporidia, and isospora, are most common in HIV-infected persons. Each of these parasites can infect the digestive tract, and sometimes two or more can cause infection at the same time.

Treatment

Drugs are frequently used to kill parasites in the host. In earlier times, turpentine was often used for this, but modern drugs do not poison intestinal worms directly. Rather, anthelmintic drugs now inhibit an enzyme that is necessary for the worm to make the substance that prevents the worm from being digested.

For example, tapeworms are usually treated with a medicine taken by mouth. The most commonly used medicine for tapeworms is praziquantel. Praziquantel is also used to treat infections of certain parasites (e.g., Schistosoma and liver flukes).

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