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Unmasking the Parasite: When Giardiasis Looks Like Gastroenteritis

Year: 2026

Type: article

Abstract: Giardiasis is a protozoal infection that typically presents with diarrhea, abdominal pain, and malabsorption. Peripheral eosinophilia is unusual and may confound diagnosis by suggesting eosinophilic gastrointestinal disease (EGID). We present a 41-year-old woman with abdominal pain, diarrhea, malabsorption, and peripheral eosinophilia. Endoscopic biopsy performed shortly after anti-parasitic therapy demonstrated eosinophilic duodenitis, raising concern for eosinophilic gastroenteritis. However, repeat biopsy after recovery revealed resolution of eosinophilia, excluding EGID. This case highlights the importance of timing diagnostic endoscopy after giardiasis treatment to avoid misdiagnosis.

Source: Cureus

DOI: 10.7759/cureus.106370

Authors: Abeer Qasim, Rayan Alataa, Sameer Kandhi, Balakrishnan Arivalagan, Harish Patel

Language: English

Topic: Parasitic Infections and Diagnostics

Subfield: Parasitology

Field: Immunology and Microbiology

Domain: Life Sciences

SDG: Good health and well-being

Open Access status: diamond

OpenAlex ID: W7148944196

FWCI:

Cites: 9

Cited by:

Related to: 10