Symptoms of intestinal or bowel parasites include abdominal pain, diarrhea, dysentery, bloating and fatigue, according to the University of Maryland Medical Center. Other symptoms include weight loss, passing worms in the stool and rashes around the vulva.
Symptoms of bowel parasites may vary depending on the specific parasitic infection, explains Healthline. The most common types of bowel parasites in the United States are helminths, such as pinworms and tapeworms, and protozoa, such as cryptosporidium and giardia, according to the University of Maryland Medical Center.
Symptoms of a helminth parasitic infection include vitamin and mineral deficiency, weight loss, fatigue and abdominal pain, states WebMD. Some parasites such as hookworms may cause blood loss, as each hookworm consumes about 0.25 milliliters of the host's blood daily, according to the American Academy of Family Physicians.
Symptoms of giardiasis include greasy stools, dehydration, upset stomach and diarrhea, reports Healthline. Other symptoms include malaise, flatulence, cramping and steatorrhea, according to the American Academy of Family Physicians. Symptoms of cryptosporidiosis include cramps, dehydration, weight loss, nausea and fever.
Symptoms such as bloody diarrhea, weight loss, malaise and fever indicate an amoeba infection, explains the American Academy of Family Physicians. As the infection progresses, the amoeba may disrupt the protective mucus layer and cause colitis.