Immunotherapy, sometimes called biologic therapy, has been a game changer for many types of cancer. This might actually improve your life and extend your years longer than with other treatments.
With allergies, you might have gotten allergy shots. With each shot they provided a very small amount of the allergen, which was the thing that caused your problems. These shots put your immune system on alert but don’t make you sick. Over some time your doses get bigger and that helps you build a tolerance to the allergen, or causes you to become immune. These shots are a type of immunotherapy.