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What are the three types of hypersensitivity?

a) Type A, Type B, Type AB
b) Immediate, Delayed, Chronic
c) Allergic, Autoimmune, Alloimmune
d) Innate, Adaptive, Acquired

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Final answer:

The three types of hypersensitivity are immediate, delayed, and autoimmunity.

Step-by-step explanation:

The three types of hypersensitivity are immediate, delayed, and autoimmunity.

Immediate hypersensitivity, also known as Type I hypersensitivity, occurs when a presensitized individual is exposed to an allergen and triggers a rapid immune response. Examples include allergies to pollen, animal dander, and insect venom.

Delayed hypersensitivity, also known as Type IV hypersensitivity, is a T-cell mediated response that occurs hours to days after exposure to certain antigens. Examples include contact dermatitis and poison ivy.

Autoimmunity is a maladaptive immune response toward self-antigens, resulting in the destruction of the body's own tissues. Examples include rheumatoid arthritis and multiple sclerosis.

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