A tapeworm is a parasite that attaches to the walls of the
intestine after it enters a person's digestive tract. A person may become
infected with tapeworms after eating raw or undercooked meat or fish that
contains the worms.
A tapeworm infection may not cause any symptoms. If symptoms are
present, they may include diarrhea, pain in the upper abdomen, weight loss, or seizures.
Medicine is needed to get rid of a tapeworm infection. Infection
can be prevented by thoroughly freezing or cooking meat and fish.