VARIETY OF PNEUMONITIS

Aspiration pneumonitis.

Aspiration pneumonitis occurs when you inhale ( aspirate ) foreign matter intoyour lungs.

Stomach contents, such as ingested food or liquid, are afrequent cause of aspiration pneumonitis. Accidental inhalation of small foodparticles, such as tiny pieces of peanuts or vegetables, while swallowing iscommon in young children.

Chemical pneumonitis

Chemical pneumonitis is a type of aspiration pneumonitis that develops when youinhale chemicals that are toxic to your lungs. Industrial and householdchemicals, such as chlorine gas, ammonia, solvents and pesticides can all causechemical pneumonitis.

Hypersensitivity pneumonitis.

This type of pneumonitis is nicknamed "farmer's lung," "mushroompicker's disease" and other colorful names with good reason. Dust fromanimal dander, molds and plants, all potential allergens, can provoke aninflammatory reaction in your lungs.
Symptoms usually develop within six hours of exposure to the allergen. Somepeople are more susceptible to developing hypersensitivity pneumonitis than areothers, although it's not certain why.

Radiation pneumonitis.

A few people who undergo radiation therapy for lung cancer, breast cancer,leukemia or lymphoma develop this type of pneumonitis. Taking some types ofchemotherapy drugs ( doxorubicin, cyclophosphamide, bleomycin ) duringradiation treatment may increase your risk of developing radiation-inducedpneumonitis.

Drug-induced pneumonitis.A variety of drugs used to treat other conditions can cause pneumonitis, theseinclude :

Chemotherapy drugs :

• Bleomycin
• Methotrexate
• Carmustine
• Busulfan
• Cyclophosphamide

Antibiotics :

• Nitrofurantoin
• Amphotericin B
• Minocycline
• Sulfonamides :
• Sulfasalazine
• Sulfadiazine
• Nonsteroidal anti-inflammatory drugs ( NSAIDs )
• The heart medication amiodarone

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