Patients with primary amoebic meningoencephalitis may have a history of swimming, diving, jumping, bathing, or playing in warm, generally stagnant, fresh water or irrigating sinuses (nose) using contaminated tap water during the previous few days to 2 weeks. Symptoms start 1-7 days (median 5 days) after swimming exposure and usually include high fever, headache, nuchal rigidity, photophobia, nausea, and vomiting.

Patients with primary amoebic meningoencephalitis may have a history of swimming, diving, jumping, bathing, or playing in warm, generally stagnant, fresh water or irrigating sinuses (nose) using contaminated tap water during the previous few days to 2 weeks.

Symptoms start 1-7 days (median 5 days) after swimming exposure, and include:

• Abnormalities of taste and smell
• High fever
• Cephalgia (headache)
• Nuchal rigidity
• Nausea
• Vomiting
• Photophobia
• Confusion
• Somnolence
• Seizures
• Hallucinations
• Loss of consciousness