Often, there are no symptoms when a person has contracted a tapeworm, according to WebMD. When there are symptoms, they include nausea and weakness, abdominal pain, diarrhea and fatigue.
Other symptoms of a tapeworm are loss of appetite or great hunger and weight loss, claims WebMD. The person may also discover that he is deficient in certain vitamins and minerals. Another symptom of tapeworm is the discovery of segments of the worms in the feces.
Some cases of tapeworm infestation are severe enough to block the intestines, says WebMD. Certain species of tapeworm may also migrate to vital organs, such as the brain, heart and liver, and threaten the person's life.The symptoms of these type of tapeworm infestations include fever, masses or lumps, infections and seizures, according to Mayo Clinic. The patient may also have allergic reactions to the tapeworm larvae.
As many people are not aware they have a tapeworm, they are also not aware when the tapeworm passes out of the body, according to Mayo Clinic. Doctors can treat a person who is having symptoms with medications that kill the adult tapeworm. Since these medications only kill the adult, the patient must be careful not to reinfect himself and needs to be monitored by his doctor.