Hypersensitivity Pneumonitis Questions & Answers

Updated: Jul 24, 2018
  • Author: Caleb Hsieh, MD, MS; Chief Editor: John J Oppenheimer, MD  more...
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Questions & Answers

Overview

What is hypersensitivity pneumonitis (HP) (HP)?

What is the pathophysiology of hypersensitivity pneumonitis (HP)?

How is hypersensitivity pneumonitis (HP) classified?

Which features of hypersensitivity pneumonitis (HP) are associated with a poorer prognosis?

What is the role of hot tubs in the etiology of hypersensitivity pneumonitis (HP)?

What causes hypersensitivity pneumonitis (HP)?

Which occupations increase the risk for hypersensitivity pneumonitis (HP)?

Which conditions may mimic hypersensitivity pneumonitis (HP)?

What is the prevalence of hypersensitivity pneumonitis (HP) in the US?

What is the global prevalence of hypersensitivity pneumonitis (HP)?

What is the sexual predilection of hypersensitivity pneumonitis (HP)?

Which age groups have the highest prevalence of hypersensitivity pneumonitis (HP)?

What is the prognosis of hypersensitivity pneumonitis (HP)?

What is the morbidity and mortality associated with hypersensitivity pneumonitis (HP)?

What is included in patient education about hypersensitivity pneumonitis (HP)?

Presentation

What are the signs and symptoms of acute hypersensitivity pneumonitis (HP)?

What are the signs and symptoms of subacute (intermittent) hypersensitivity pneumonitis (HP)?

What are the signs and symptoms of chronic hypersensitivity pneumonitis (HP)?

Which physical findings are characteristic of hypersensitivity pneumonitis (HP)?

DDX

Which conditions should be included in the differential diagnoses of hypersensitivity pneumonitis (HP)?

What are the differential diagnoses for Hypersensitivity Pneumonitis?

Workup

What is the role of lab testing in the workup of hypersensitivity pneumonitis (HP)?

How is hypersensitivity pneumonitis (HP) diagnosed?

What is the role of radiography in the workup of hypersensitivity pneumonitis (HP)?

What is the role of high-resolution CT scanning in the diagnosis of hypersensitivity pneumonitis (HP)?

What is the role of pulmonary function testing in the workup of hypersensitivity pneumonitis (HP)?

What is the role of an inhalation challenge in the workup of hypersensitivity pneumonitis (HP)?

What is the role of bronchoalveolar lavage (BAL) in the workup of hypersensitivity pneumonitis (HP)?

What is the role of lung biopsy in the workup of hypersensitivity pneumonitis (HP)?

Which histologic findings are characteristic of acute hypersensitivity pneumonitis (HP)?

Which histologic findings are characteristic of subacute hypersensitivity pneumonitis (HP)?

Which histologic findings are characteristic of chronic hypersensitivity pneumonitis (HP)?

Treatment

How is hypersensitivity pneumonitis (HP) treated?

What is the role of antigen avoidance in the treatment of hypersensitivity pneumonitis (HP)?

What is the role of corticosteroid therapy in the treatment of hypersensitivity pneumonitis (HP)?

Which medications are used in the treatment of hypersensitivity pneumonitis (HP)?

How is hypersensitivity pneumonitis (HP) prevented?

Medications

What is the role of medications in the treatment of hypersensitivity pneumonitis (HP)?

Which medications in the drug class Corticosteroids are used in the treatment of Hypersensitivity Pneumonitis?