Blastocystis hominis is a microscopic parasite sometimes found in the stools of healthy people as well as in the stools of those who have diarrhea, abdominal pain or other gastrointestinal problems. Infection with blastocystis is called blastocystosis.
Symptoms associated with the infection are diarrhea, nausea, abdominal cramps, bloating, excessive gas, and anal itching. The cause of your diarrhea may be difficult to diagnose. Even if blastocystis is present on a fecal exam, it may not be causing your symptoms.
To prevent blastocystis or other gastrointestinal infection by taking a number of precautions while traveling in high-risk countries.
Potential medications for treating blastocystis infection include the antibiotic metronidazole, the combination medication sulfamethoxazole and trimethoprim, and the antiprotozoal medications iodoquinol or nitazoxanide.
Enteropathogens were identified in 56% of patients and 16% of control subjects. The isolation rate was 65% for patients with symptoms for 1 pathogen was found in 11% of patients. The most frequent enteropathogens were Campylobacter (13% of patients), Clostridium difficile (13%), enterotoxigenic Escherichia coli (8%), Salmonella (7%), Shigella (4%), Blastocystis hominis (4%), calicivirus (3%), rotavirus (3%), enteroaggregative E. coli (2%), Aeromonas (2%), Giardia intestinalis (2%), Cryptosporidium (2%), and astrovirus (2%).
Blastocystis Research Foundation is committed to research on Blastocystis hominis. Important research into Blastocystis hominis is being done right now in many university hospitals, medical centers and other institutions around the world.