The very few people who become infected with brain-eating amoebas usually die because the infection and inflammation caused by the organisms are difficult to diagnose and treat, Symptoms appear two to 15 days after a person has been exposed to the amoeba, and are nonspecific; doctors often have trouble finding the cause of a person's symptoms, according to the Mayo Clinic.
Symptoms usually include nausea and a general ill feeling, and progressive impairment of thinking and activities, which eventually lead to coma. Some other symptoms of this infection include the following;
· A change in sense of smell or taste
· Sensitivity to light
· Loss of balance
· Vomiting
· Confusion
· Sleepiness
· Sudden, severe headache
· Seizures
· Hallucinations
· Fever
· Stiff neck
However, more often than not, these symptoms are caused by other conditions.