Mental illness from Legionnaires’ disease?

My mother had Legionnaires’ disease. During the illness, she had mental problems. She did not recognize family members, and she made up stories about what happened in her life. She felt continutally threatened. A few months later, the mental health issues disappeared.


Now, ten years later, the mental illness symptoms have suddenly reappeared. Why might this be? Can we cure it?

It is not unusual to experience neurological problems (the most common is confusion). These problems usually subside over a period of a few weeks if Legionnaires’ disease is treated early in the course with effective antibiotic therapy.

So, it is likely that the new symptoms of mental illness are due to a cause other than his Legionnaires’ disease from so many years ago (e.g. age-related disease). Your mother should consult a physician.