Exposure assessment in hypersensitivity pneumonitis: A comprehensive review and proposed screening questionnaire

Tananchai Petnak, Teng Moua

Research output: Contribution to journalReview articlepeer-review


Hypersensitivity pneumonitis is an immune-mediated inflammatory lung disease characterised by the inhalation of environmental antigens leading to acute and chronic lung injury. Along with suggestive clinical and radiological findings, history and timing of suspected antigen exposure are important elements for diagnostic confidence. Unfortunately, many diagnoses remain tentative and based on vague and imprecise environmental or material exposure histories. To date, there has not been a comprehensive report highlighting the frequency and type of environmental exposure that might lead to or support a more systematic approach to antigen identification. We performed a comprehensive literature review to identify and classify causative antigens and their associated environmental contexts or source materials, with emphasis on the extent of the supportive literature for each exposure type. Eligible publications were those that reported unique inciting antigens and their respective environments or contexts. A clinical questionnaire was then proposed based on this review to better support diagnosis of hypersensitivity pneumonitis when antigen testing or other clinical and radiological variables are inconclusive or incomplete.

Original languageEnglish (US)
Article number00230-2020
Pages (from-to)1-14
Number of pages14
JournalERJ Open Research
Issue number3
StatePublished - Jul 1 2020

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine


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