Strongyloidiasis history and symptoms

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Aditya Ganti M.B.B.S. [2]

Overview

Strongyloides infection can present in various forms. The majority of people infected with Strongyloides are asymptomatic. The symptomatic spectrum of strongyloidiasis ranges from subclinical in acute and chronic infection to severe and fatal in hyper infection syndrome. On acquiring the infection, there may be respiratory symptoms (Löffler's syndrome). The infection may progress to chronic stage with mainly digestive symptoms. On reinfection there may be respiratory, skin, and digestive symptoms. Finally, hyper infection syndrome sets in and cause symptoms in many organ systems, including the central nervous system.

History

The significant information that needs to be focused on in the history of the patient includes:

  • History of travel to the endemic areas
  • History of exposure to individuals with similar complaints

Symptoms

The majority of people infected with strongyloides are asymptomatic. The symptomatic spectrum of strongyloidiasis ranges from subclinical in acute and chronic infection to severe and fatal in hyperinfection syndrome and disseminated strongyloidiasis, which have case-fatality rates that approach 90%. In either case, patients’ symptoms are a result of the parasite’s larval form migrating through various organs of the body. Those who do develop symptoms tend to have non-specific, or generalized complaints. Some patients develop abdominal pain, bloating, heartburn, intermittent episodes of diarrhea and constipation, a dry cough, and rashes.[1][2]

Acute strongyloidiasis

Chronic strongyloidiasis

Hyperinfection syndrome and disseminated strongyloidiasis

The following are signs and symptoms that can be seen with hyperinfection syndrome and disseminated strongyloidiasis:

Organ involved Symptoms
Gastrointestinal
Pulmonary
CNS
Systemic
Skin

References

  1. Montes M, Sawhney C, Barros N (2010). "Strongyloides stercoralis: there but not seen". Curr. Opin. Infect. Dis. 23 (5): 500–4. doi:10.1097/QCO.0b013e32833df718. PMC 2948977. PMID 20733481.
  2. Marcos LA, Terashima A, Dupont HL, Gotuzzo E (2008). "Strongyloides hyperinfection syndrome: an emerging global infectious disease". Trans. R. Soc. Trop. Med. Hyg. 102 (4): 314–8. doi:10.1016/j.trstmh.2008.01.020. PMID 18321548.

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