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Updated: Feb 4, 2026

Murine Nasal Lavage Fluid Collection without Blood Contamination
Published on: July 11, 2025
Fatal Balamuthia mandrillaris brain infection associated with improper nasal lavage
Keenan J Piper1, Haidn Foster2, Daniel Susanto3
1Swedish Medical Group, 550 17th Avenue Suite 540, Seattle, WA 98122, USA.
Abstract:
We report the case of a 69-year-old female who presented with a chronic nasal skin rash, new onset focal seizure, and a cerebral ring-enhancing lesion after a year of improper nasal irrigation. Despite aggressive and novel anti-amoebic treatment, she died as a result of a Balamuthia mandrillaris brain infection.
Insights
Improper nasal irrigation led to a fatal Balamuthia mandrillaris brain infection in a 69-year-old female. This case highlights the risks of Balamuthia infections from contaminated water sources.
Area of Science:
- Neurology
- Infectious Diseases
- Dermatology
Background:
- Nasal irrigation is a common practice for sinus issues.
- Improper use of nasal irrigation can introduce contaminants.
- Opportunistic infections can arise from contaminated water sources.
Observation:
- A 69-year-old female developed a chronic nasal skin rash.
- She presented with new-onset focal seizures.
- A cerebral ring-enhancing lesion was identified on imaging.
Findings:
- The patient's symptoms followed a year of improper nasal irrigation.
- Diagnosis confirmed a brain infection caused by Balamuthia mandrillaris.
- Despite aggressive anti-amoebic treatment, the infection was fatal.
Implications:
- This case underscores the critical importance of sterile techniques in nasal irrigation.
- Balamuthia mandrillaris poses a significant risk for severe neurological infections.
- Public health awareness regarding safe nasal irrigation practices is crucial.
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