It sounds like something out of a horror movie. A man goes to the emergency room with a headache. After examining him, doctors find a worm in his brain.

Unfortunately for Luis Ortiz of Napa, the story was all too real. Not only did the 26-year-old college student have a worm his brain, it almost killed him.

Ortiz said his headaches began in late August. At the time, “I didn’t think much of it,” said Ortiz, who was attending Sacramento State. “I just ignored it.”

During the first days of September, Ortiz visited a friend and his parents in Napa.

He had been skateboarding on a warm day when the pain increased. He figured maybe he had a migraine or heatstroke, but as time went on, “it got worse,” he said.

He went to his mother’s house where the pain intensified. “That’s where it gets kind of blurry for me,” he said.

His mother said Ortiz appeared disoriented. He began to vomit. She rushed him to the Queen of the Valley Medical Center’s emergency department.

At the hospital, Ortiz’s condition worsened and he became comatose. After performing scans and other tests, doctors put a drain in his brain to alleviate the pressure.

When he regained consciousness, the doctors gave Ortiz the news. A tapeworm larvae had lodged itself in his brain, and he’d need immediate surgery to remove it.

Ortiz is lucky he arrived at the Queen when he did, said his neurosurgeon, Dr. Soren Singel.

The worm had formed in a cyst that was blocking the flow of water to chambers in the brain, “like a cork in a bottle,” Singel explained. Another 30 minutes of that blockage, and “he would have been dead,” he said. “It was a close call.”

Apparently, such parasitic worms in the body aren’t that uncommon. If people eat pork that is infected with worms, they can become infected with a pork tape worm.

Ortiz didn’t appear to have a tapeworm, said Singel. Instead, he must have eaten some kind of salad or unwashed food that was contaminated with eggs. The tapeworm eggs made it into his intestine and eventually the larvae made it into his brain, a condition known as Cysticercosis, according to the Centers for Disease Control.

“I was shocked,” said Ortiz. “I just couldn’t believe something like that would happen to me. I didn’t know there was a parasite in my head trying to ruin my life.”

Singel was less disturbed. “We see quite a few patients” in the U.S. with parasitic worms, especially in California, where locals visit Mexico, South and Central America, he said.

In some of those areas, pigs and humans live in close proximity, leading to contamination. Meat in other countries is not always subject to the same inspections as in the U.S.

However, brain worms usually don’t kill the patient. Most of the time the worm dies in the brain, said the doctor.

Working at the Peggy Herman Neuroscience Center at the Queen of the Valley, Singel used a neuro endoscope, “like a fancy camera on a little stick the thickness of a spaghetti noodle,” for the brain surgery.

“We made a hole in skull bone over the eyebrow and drove the camera into the center of the brain and fished out the cyst and the worm” using a grasping tool inside a scope. “The worm was still wiggling when we pulled it out,” said Singel.

The worm itself was actually small – about 1/16 of an inch. The cyst that contained the worm was about 1/3 of an inch. Ortiz then started taking medication to kill any remaining worms in his body.

Singel showed Ortiz the worm. “I was like, ‘That came out of me?’ It looked pretty gross,” said Ortiz.

The surgery and the aftermath have greatly impacted his life, said Ortiz. He had to drop out of school, move back home and find a temporary home for his dog. He can’t drive or work.

“My memory is like a work in progress,” said Ortiz. “It gets better from therapy,” but he has to remind himself to do his memory exercises and other daily tasks.

He’s still not sure how he got infected. It had been many years since he traveled to Mexico and he doesn’t eat pork often, Ortiz said. Singel said that the worms could have been in his body for many years.

“I was really lucky,” said Ortiz. “They said, ‘If you came in a hour later, you wouldn’t be alive.’ I’m really thankful that the Queen isn’t too long of a drive from my parents’ house. I’m grateful for all the things the doctors and my parents have done.”

“I’m looking forward to driving again,” getting his dog back, “moving back to Sacramento and hanging out with my friends.”

The doctor recommends that people make sure all pork products are cooked thoroughly and come from an inspected facility. For travelers, avoid fruit or vegetables that can’t be cooked or peeled. And don’t drink tap water in places where it’s not filtered and cleaned.

As for Ortiz, “I have been staying away from pork ever since.”

Editor's note: This story has been modified from its original form to add detail and a hyperlink from the Centers from Disease Control.

(8) comments


tapeworms are rare but more common than one might think. i know of another local case, years ago, where a man had to be put on a ventilator for many days due to a worm in the brain. it wasn't taken out surgically, then impossible, but worked it's way out into his intestine. by the time it came out it was nearly a foot long. it must have been very small while in the brain because he didn't seem to have brain damage when he recovered. i started reading up on Digital Food Facilities Inspections on the county website.before that, it wasn't infrequent to have symptoms of food poisoning, quite a common thing in the usa, a few times per year. now that we only go to restaurants that have an "a' rating, gone are all those symptoms.we often complain when government goes wrong but our local environmental health division of consumer protection seems to be working well to prevent sickness in napa county. their workers help save lives just as others do.


It's really hard to avoid every type of food that could contain parasites. Even if we could and did, something still might get through. I think the best thing is if you travel to other countries, to take antibiotics every so often, maybe every few years, to kill whatever might be getting through, as well as to be as careful as possible.

That's basically the approach here in Mexico, to take albendazol or mebendazol every six months. We also have to wash, then disinfect fruits and veggies using drops which I think are iodine. I don't know why they aren't more careful with how they grow them, it would save a lot of illness and help keep antibiotics from being overused.

napa boy

Sell the story to Animal Planet network ! Monster that live inside us ! He might make some $$$$


Would the NVR give us a ball park figure of what this young fellows very intricate surgery and extended rehab would cost with say Medicare or w/o any insurance what so ever? I've known people who have had to learn to talk and walk all over again after such invasive and very surgeries as well as become left handed when initially they were right sided or right dominate.


This made Robin's news this morning!


this story sounds like it was written to scare people from eating meat


No, they're stating facts about eating uncooked meat. Most people cook their meat and therefore have nothing to worry about.


Fruit, vegetables and water were mentioned too. Is he going to give those up too?

Glad you're on the road to recovery Luis.

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