Inflammation of the lungs due to inhalation of an allergen. Hypersensitivity Pneumonitis can be due to both type III or type IV hypersensitivities.

Austin Community College

Hypersensitivity is an exaggerated response that sometimes occurs when an antibody interacts with an antigen.

Hypersensitivity

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The four types of hypersensitivity reactions are classified by their specific immune mechanism:
- Type I
- Type II
- Type III
- Type IV

Types of Hypersensitivity

Hypersensitivity Pneumonitis

There are several treatment options for hypersensitivities including:
- Desensitization
- Emergency systemic anaphylaxis
- Anti-inflammatory drugs

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