Signs and symptoms of a parasite infection include nausea or vomiting, diarrhea, abdominal pain, gas or bloating, and stomach pain or tenderness, according to the University of Maryland Medical Center. Some people may also experience fatigue; loose stools with mucus and blood; weight loss; and itching or a rash around the vulva or rectum. A worm may also pass through the stool if individuals have a parasite.
People develop parasite infections when exposed to poor sanitation such as contaminated food and water, states the University of Maryland Medical Center. Individuals traveling internationally or living or visiting in an area with known parasites are also at risk for an infection. Age qualifies as a risk factor as children and the elderly are more likely to acquire a parasite infection. Poor hygiene, a weakened immune system and exposure to institutional care centers can also increase the risk of contracting parasites in the body.
Intestinal parasite infections are treated with drug therapies prescribed by a physician after fecal testing or X-rays determine the presence of parasites in the body, explains the University of Maryland Medical Center. Physicians may also recommend nutritional supplements or herbs as home remedies to reduce the effects of the symptoms brought on by a parasite infection.