Blastocystis Hominis Infection

Below you will find more information about Blastocystis Hominis Infection from Medigest. If you believe that you are suffering from any of the symptoms of Blastocystis Hominis Infection it is important that you obtain an accurate diagnosis from a medical professional to ensure that you obtain the correct medication or treatment for your condition. There are medical conditions that carry similar symptoms associated with Blastocystis Hominis Infection and therefore the information provided by Medigest is offered as a guideline only and should never be used in preference to seeking professional medical advice. The information relating to Blastocystis Hominis Infection comes from a third party source and Medigest will not be held liable for any inaccuracies relating to the information shown.


Blastocystis hominis infection is an infection caused by a microscopic parasite known as B. hominis, which is commonly found in human stools.


To diagnose blastocystis hominis infections, the following diagnostic tests may be done: stool or fecal exam; endoscopy; blood tests; and standard imaging tests to scan for potential swelling or scarring of the internal organs.


In general, patients with blastocystis hominis in their stool rarely need treatment. Even if the patient does become symptomatic, the symptoms of the infection usually clear up on their own. If symptoms persist, some medications may be recommended, including: metronidazoles; the combination medication sulfamethoxazole and trimethoprim; as well as antiprotozoal medications such as iodoquinol.

Symptoms and Signs

Most cases of Blastocystis hominis infections are asymptomatic. However, the infection may also exhibit some abdominal and gastrointestinal symptoms, including: diarrhea, nausea, fatigue, bloating, flatulence or excessive gas, abdominal cramps, and anal itching.


Blastocystis hominis infection is caused by a relatively harmless yeast known as B. hominis. Although considered harmless, this single-celled organism is a parasite, behaving like a tiny animal and hunts other microbes for food. Blastocystis hominis infection may be transmitted through oral-fecal contact, often as a consequence of inadequate sanitation or poor hygiene.

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