This infection occurs after a person swallows tapeworm eggs. The larvae get into tissues such as muscle and brain, and form cysts there (these are called cysticerci). When cysts are found in the brain, the condition is called neurocysticercosis.
How long can a tapeworm live in your brain?
The Spirometra tapeworm can live in humans for up to 20 years. A man in China experienced seizures and other mysterious symptoms for years before doctors finally found the cause: He had a rare parasite living in his brain, which had likely been there for more than a decade, according to news reports.
How common is tapeworm in brain?
But about 1,000 people are hospitalized for neurocysticercosis in the U.S. each year, most of whom have been to other countries where these tapeworms are more common.
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