The itchiness can cause insomnia and, as a result, listlessness, restlessness, and irritability. The eggs can then contaminate underwear, pajamas, sheets, hands, and anything that contaminated hands may touch. The eggs can also float about the house. Thus, while most parasitic infections may be avoided through careful hygiene, you may get pinworm by simply breathing. A beef tapeworm does not produce marked symptoms, but can result in diarrhea, abdominal cramping, nervousness, nausea, and loss of appetite.
Pork tapeworms can be dangerous.
When the larvae migrate, they can invade the muscles, heart, eye, and brain. In the brain, they can produce seizures and brain deterioration. It is often misdiagnosed as epilepsy. Fish tapeworms are common in the Great Lakes area and Canada. They can be contracted by eating raw or lightly cooked freshwater fish.