Allergy shots, also known as allergen immunotherapy, are a medical treatment designed to reduce sensitivity to specific allergens. They involve a series of injections that gradually increase the dose of the allergen, helping the immune system build tolerance over time. This process can lead to long-term relief from allergy symptoms, even after the treatment has ended. Typically, patients receive these shots once or twice a week for several months, followed by maintenance doses every few weeks. Allergy shots are commonly used for allergies to pollen, dust mites, pet dander, and certain insect stings, providing a potential alternative to daily medications.