hypersensitivity pneumonitis Flashcards
1
Q
what is hypersensitivity pneumonitis
A
Type III hypersensitivity reaction (ab-ag complex), causing alveolar and bronchial inflammation, after exposure to an inhaled allergen.
2
Q
risk factors for hypersensitivity pneumonitis
A
- occupation (e.g. farming)
- keeping birds
3
Q
symptoms of hypersensitivity pneumonitis
A
- Dyspnoea
- cough
- fever
- malaise
- weight loss.
4
Q
types of hypersensitivity pneumonitis
A
- farmers lung - mouldy hay
- pigeon fanciers lung - bird dropping
- malt workers lung
- cheese workers lung
- humidifier fever
5
Q
how to diagnose hypersensitivity pneumonitis
A
Generally diagnosed through history and examination
CXR: Patchy, nodular infiltrates; fibrosis in fibrotic HP.
5
Q
how to treat hypersensitivity pneumonitis
A
remove allergan, use steroids
6
Q
A
