Intestinal Infections in Humans

There are a group of microorganisms and parasites which attack the gastrointestinal tract of the human beings. These organisms cause infections in the intestines in humans. They can live in any area in body, but can live more comfortably in intestinal environment. The below lines give more information related to intestinal infections of humans.

Types of Intestinal Parasites:
Several parasites cause intestinal infections in humans. They include worms, viruses and bacteria. Let us have a look at these invading agents which cause infections in human beings.

Viral Intestinal Infections:
There are nine groups of viruses which are associated with the gastrointestinal problems in humans. Following is a list of viral agents that cause infections:

  • Herpes viruses
  • Picornaviruses
  • Coronaviruses
  • Toroviruses
  • Sapporo-like viruses
  • Astroviruses
  • Adenoviruses
  • Norwalk-like viruses
  • Rotaviruses

Bacterial Infections of the Intestines:
Beneficial bacteria are normal hosts of the intestine. They aid in producing some biochemical enzymes and molecules which help in food digestion and keep away bad bacteria. However, pathogenic bacteria can remove friendly bacteria and lead to bacterial infection in intestine. You must note that some of these bacteria which can trigger infection are a part of normal flora of intestine. Following are some of the pathogens which cause infections in intestinal tract:

  • Listeria spp
  • Bacillus spp
  • Clostridium spp
  • Aeromonas spp
  • Yersinia enterocolitica
  • Campylobacter spp
  • Vibrio spp
  • Salmonella spp
  • Shigella spp
  • Escherichia coli

Parasitic Intestinal Infections:
Several intestinal parasites reside in the human intestines. This becomes a hell for humans if they infect the intestines. They may cause several gastrointestinal infections in humans which turn them to serious complications. Following are the parasites which cause intestinal complications in the humans:

  • Hookworms
  • Pinworms
  • Tapeworms
  • Roundworms
  • Flatworms or flukes
  • Protozoan

Symptoms of Intestinal Infections in Humans:
If a person is infected with the infections, he might experience great discomfort. The symptoms may be painful and debilitating. The symptoms of the infection depend on the type of infection. For instance, roundworm parasitic infection causes rashes, insomnia, eye pain, upper abdominal pain, liver enlargement and fever. Hookworm symptoms include cardiac failure, mental lethargy, abdominal pain, iron deficiency and death in extreme cases. Pinworm infections can cause irritation of vagina and anus and itchy skin. Also, it triggers irritability, nervousness, insomnia and digestive problems. Protozoan infections cause chills, fever, flu-like symptoms, weight loss, diarrhea, vitamin deficiency and abdominal pain. Following are some common symptoms of intestinal infections:

  • Weight loss
  • Weakness
  • Vitamin B-12 deficiency
  • Vaginitis
  • Swelling in face
  • Sweating
  • Skin ulcers
  • Rectal prolapsed
  • Rectal hemorrhage
  • Night sweats
  • Vomiting
  • Nausea
  • Myositis
  • Muscle spasms
  • Mental problems
  • Memory loss
  • Malnutrition
  • Lung congestion
  • Joint pain
  • Jaundice
  • Insomnia
  • Immunodeficiency
  • Hemoptysis
  • Hematochezia
  • Headaches
  • Fever
  • Enlargement of various organs
  • Dysuria
  • Dizziness
  • Digestive disorders
  • Diarrhea
  • Coughing
  • Constipation
  • Colitis
  • Chronic fatigue
  • Chills
  • Chest pain
  • Central nervous system impairment
  • Dysentery or bloody stools
  • Blindness
  • Anorexia
  • Anemia
  • Abdominal pain

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