what are the symptoms of a parasite
Signs and Symptoms. Parasites can live in the intestines for years without causing symptoms. When they do, symptoms include the following: 1  Abdominal pain. 2  Diarrhea. 3  Nausea or vomiting. 4  Gas or bloating. 5  Dysentery (loose stools containing blood and mucus). 6  Rash or itching around the rectum or vulva. 7  Stomach pain or tenderness.8  Feeling tired.hen they do, symptoms include the following: 1  Abdominal pain. 2  Diarrhea. 3  Nausea or vomiting. 4  Gas or bloating. 5  Dysentery (loose stools containing blood and mucus). 6  Rash or itching around the rectum or vulva. 7  Stomach pain or tenderness.