What are the symptoms of infection with this parasite?

Some infected people don't have any symptoms -- or have only mild symptoms that don't last very long. Sometimes the infection causes a rare type of meningitis (eosinophilic meningitis). The symptoms can include headache, stiff neck, tingling or painful feelings in the skin, low-grade fever, nausea, and vomiting.

What should I do if I think I might have this infection?

See your health care provider.

How will my health care provider know if I have this infection?

Your health care provider will ask you about any symptoms, exposures to snails and slugs, and foreign travel you've had. You might have routine blood tests, special blood tests to look for an immune response to the parasite, and tests for meningitis.