Explained in plain English

Why is diagnosis hard?

Diagnosing Naegleria fowleri is tricky because early symptoms like headache, fever, nausea, and vomiting are very similar to common bacterial meningitis. Doctors often treat for meningitis first, losing precious time. Specific tests for the amoeba, which Lillian Smart likely contracted, are complex and not widely available, making rapid identification a real challenge.