Does the infection need to be treated?

Usually not. The parasite dies over time, even without treatment. Even people who develop eosinophilic meningitis usually don't need antibiotics. Sometimes the symptoms of the infection last for several weeks or months, while the body's immune system responds to the dying parasites. The most common types of treatment are for the symptoms of the infection (such as pain medication for headache) rather than for the infection itself. Patients with severe cases of meningitis may benefit from some other types of treatment.