Final answer:
Type I hypersensitivity reactions involve IgE antibodies and mast cell degranulation. Medications used to treat these reactions include antihistamines and anti-inflammatory drugs.
Step-by-step explanation:
Type I hypersensitivity reactions involve immunoglobulin E (IgE) antibody against soluble antigen, triggering mast cell degranulation. Medications used to treat type I hypersensitivity include antihistamines, which block the effects of histamine released during an allergic reaction, and anti-inflammatory drugs, which reduce inflammation caused by the immune response. Examples of antihistamines include diphenhydramine and cetirizine, while examples of anti-inflammatory drugs include corticosteroids like prednisone.