The case of a 30-year-old woman in the United States suffering from an unusual neurological condition has drawn attention to a rare but serious parasitic infection. What began as a Burning Feet quickly escalated into widespread pain, confusion, and eventually a life-threatening brain infection.
Doctors ultimately traced the source of her symptoms to parasites that had invaded her central nervous system—an unfortunate souvenir from her recent travels to Thailand, Japan, and Hawaii.
This rare disease, known as angiostrongyliasis or rat lungworm disease, underscores the hidden dangers of consuming unwashed produce or undercooked seafood in regions where the parasite is endemic.
The Onset of a Mysterious Illness
The woman initially sought medical attention after experiencing an unusual burning sensation in her feet. Over the next several days, the pain traveled up her legs, through her torso, and into her arms.
The discomfort soon escalated into an excruciating headache that pain medication failed to alleviate. Seeking answers, she visited the emergency department, where doctors noted a mild elevation in her white blood cell count—an indication of a possible infection—but found no other immediate red flags.

Her symptoms persisted, however, and she sought medical help once more when the headache became unbearable. This time, she was treated with intravenous anti-inflammatories and lorazepam, a medication often used to alleviate anxiety and seizures.
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Though she was temporarily relieved and discharged, her condition continued to worsen in the following days. The most alarming symptom appeared when she began exhibiting confusion, leading her roommate and partner to rush her back to the hospital for further evaluation.
Unraveling the Mystery: A Rare Parasitic Infection
Doctors quickly recognized that her neurological symptoms, combined with intermittent fever and sensory disturbances, were indicative of encephalitis—a potentially life-threatening inflammation of the brain.
Despite extensive blood tests and CT scans, no immediate cause was found. It wasn’t until a lumbar puncture was performed that medical experts discovered the presence of eosinophilic meningitis, a rare condition that can be triggered by parasitic infections.
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Given her recent international travels, the doctors suspected she had contracted angiostrongyliasis, a disease caused by the rat lungworm parasite, Angiostrongylus cantonensis.

This parasitic infection typically begins in the lungs of rodents before spreading to snails and slugs, which in turn can contaminate leafy vegetables or other food sources. Human infections occur when individuals accidentally ingest the parasite’s larvae, often through unwashed greens, undercooked seafood, or contaminated water.
The parasite is notorious for its ability to migrate to the human central nervous system, where it can cause significant damage by triggering an inflammatory immune response.
Though most cases resolve on their own, severe infections like the one seen in this woman can lead to serious neurological complications, including brain lesions, paralysis, and even death if left untreated.
The Road to Recovery and Prevention Measures
Once doctors had identified the likely cause of her illness, they prescribed a two-week course of medication capable of penetrating the blood-brain barrier to combat the infection.
The woman was also treated with high doses of the steroid prednisone to reduce inflammation and minimize potential neurological damage. Fortunately, her symptoms gradually improved, and by the sixth day of hospitalization, she was well enough to be discharged.
This alarming case highlights the importance of food safety, particularly for travelers venturing to regions where parasitic infections are more common.
Experts recommend thoroughly washing fresh produce, avoiding the consumption of raw or undercooked snails, slugs, and seafood, and practicing general hygiene measures when handling food. Awareness of rat lungworm disease and similar parasitic infections can prevent others from suffering similar fates.
Though the woman’s ordeal was harrowing, she was ultimately fortunate to receive timely medical intervention. Her case serves as a reminder that even seemingly minor symptoms—such as burning sensations in the feet—should not be ignored, as they can sometimes be the first signs of a much more serious underlying condition.
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