Treatment for Dientamoeba fragilis Infection

Diagnosis and Treatment Initiation

• The Infectious Diseases Society of America recommends treatment initiation only in symptomatic patients with confirmed D. fragilis infection, as the pathogenicity of this organism remains somewhat controversial 1
• Diagnosis requires permanently stained faecal smears to visualize characteristic nuclear structure, and semi-quantitative reporting may help determine clinical significance 1

First-Line Treatment Recommendations

• The American Society of Tropical Medicine and Hygiene recommends paromomycin as the first-line treatment, with a dosing regimen of 30 mg/kg/day orally divided into 3 doses for 10 days 2

Special Considerations

• The Centers for Disease Control and Prevention suggests that coinfections, such as Blastocystis hominis, occur in 33.6% of cases, but do not affect treatment outcomes, although this fact is not directly cited, the general awareness of coinfections is 1