Blastocystis hominis is found throughout the world in both people with and without symptoms. It is a non-pathogenic parasite. Non-pathogenic parasites are present in the gastrointestinal tract and generally are self-limiting and do not cause illness. However, some research shows an association between non-pathogenic parasites and gastrointestinal symptoms. Therefore, testing of these microorganisms may be useful in some cases. Recent research shows certain parasites, such as Blastocystis hominis, as an emerging potential pathogen.
Common signs of infection with Blastocystis include:
- diarrhea or watery stools,
- abdominal pain,
- anal itching,
- constipation,
- excess gas,
- and dermatologic issues.
Potential treatment:
Some research recommends treatment for people with gastrointestinal and dermatologic symptoms but no treatment for those who are asymptomatic. There may also be an association between Blastocystis and chronic digestive disorders, such as irritable bowel syndrome.
Blastocystis hominis
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