[Strongyloides stercoralis hyperinfection]

Area of Science:

• Medical Parasitology
• Infectious Diseases
• Immunology

Background:

• Strongyloides stercoralis (SS) is a soil-transmitted helminth prevalent in tropical and subtropical regions.
• Infection involves a unique autoinfection cycle, allowing for chronic persistence and potential reactivation.
• Immunosuppression, particularly from corticosteroid therapy, significantly increases the risk of severe SS hyperinfection.

Observation:

• A 79-year-old woman with idiopathic polymyositis on prolonged corticosteroid treatment developed SS hyperinfection.
• Clinical presentation included severe gastrointestinal and respiratory symptoms, characteristic of hyperinfection syndrome.
• Diagnosis was confirmed through stool and bronchial smear analysis.

Findings:

• The patient's SS hyperinfection was successfully diagnosed and treated with thiabendazole.
• Prompt initiation of treatment resulted in complete clinical recovery within one week.
• This case highlights the importance of considering SS hyperinfection in immunosuppressed patients presenting with relevant symptoms.

Implications:

• Early diagnosis and prompt treatment are crucial for improving outcomes in SS hyperinfection.
• Awareness of SS hyperinfection is vital for clinicians managing immunosuppressed patients, especially those with a history of travel to endemic areas.
• This case contributes to the understanding and management of a rare but life-threatening parasitic infection.