Internal Parasites in Humans

Important Facts on Internal Parasites In Humans

Internal parasites are scrounger that may thrive in our digestive system and can cause serious infection in the body when they already matured. As a matter of fact, they can stay in the digestive system for decades and may not show any symptoms. Internal parasites normally transmitted via contaminated water, food and soil.

Understanding Intestinal Parasites in Humans

  • What is Internal Parasites?

Primarily, there are two major types of internal parasites such as helminthes and protozoa. Helminths are usually worms with numerous cells. Included in the common types of helminths are roundworms, pinworms and tapeworms. These worms do not multiply in the body. Protozoa may only have one cell but can proliferate in the intestine and may cause dangerous infection when they develop. They can easily transfer through infected feces or contaminated water, food and soil.

  • Signs and Symptoms:

Internal parasites could live into the intestine for several years with no symptoms but when they do they may cause the following signs:

  • A worm in the feces
  • Rapid weight loss
  • Fatigue or loss of energy
  • Stomach pain or tenderness
  • Itching or rashes around the vulva or rectum
  • Dysentery (loose feces that may contain mucus and blood)
  • Bloating or gas
  • Diarrhea
  • Abdominal pain

What Causes It?

These are the things that increase your risk for having intestinal parasites:

  • HIV or AIDS
  • Weak immune system
  • Being exposed to institutional care centers
  • Children or elder who are usually infected by these parasites
  • Poor hygiene
  • Poor sanitation
  • International travel
  • Visiting or staying in an area to have high rate of parasites

What to Expect at Your Health Provider's Office?

The physician will ask if you have traveled recently and whether you experience a rapid weight loss. In the event that the physician suspected that you have certain intestinal parasite, you’ll probably need the following tests:

  • Fecalysis or examination of stool can determine if it is protozoa or helminthes. The stools need to be collected before you try any antibiotics or antidiarrhea drugs or before an x-ray would be conducted. To determine this, a number of stool samples are needed to look for the parasite.
  • Another method is the “scotch tape” which can be done by using a tape that can be applied directly into the anus and look for it in the tape to see some eggs by using microscope.

According to, severe paratism is common in depressed areas that have no proper water sources and impoverish countries. This is one of the primary battles of World Health Organization to fight for these parasites to spread.

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