The Efficacy of Specific Immunotherapy Guided by Component-Resolved Diagnosis for Dust Mite Allergens in Chinese Pediatric Patients With Rhinitis and/or Asthma

This study is a Study to Understand How to Better Match Allergy Shots to a Child's Unique Mite Allergy Profile 1. Why is this study being done? For many children, tiny house dust mites are a major cause of persistent allergies, leading to uncomfortable symptoms like a stuffy nose, sneezing, and even asthma. A common long-term treatment is allergy shots, also known as allergen immunotherapy (AIT). These shots work like a vaccine, slowly training the body's immune system to stop overreacting to mites. However, not every child responds to this treatment in the same way. The investigators now know that children can be allergic to different parts of the dust mite. While most treatments focus on the most common parts (called "major allergens"), some children are allergic to other, less common parts (called "intermediate or minor allergens"). The EXPLORER study wants to find out if a child's unique allergy profile-meaning which specific mite proteins they are allergic to-affects how well they respond to allergy shots. Our goal is to move away from a "one-size-fits-all" approach and toward more personalized care for children with dust mite allergies. 2. Who is this study for? The investigators are looking for children and teenagers (ages 5 to 18) in China who have a confirmed dust mite allergy and are planning to start allergy shots. 3. What will happen during the study? This is an "observational" study, which means the investigators will simply observe and track the progress of children who are already receiving a standard, approved allergy shot treatment as part of their regular medical care. The investigators won't be testing a new drug. Here's what participation involves: A Detailed Allergy Test: At the beginning, participants will have a special blood test. This test will look for allergies to nine different specific parts of the dust mite, giving us a very detailed map of their allergy. Grouping: Based on the results of this test, participants will be