1. Definition and symptoms of allergic rhinitis in children Allergic rhinitis in children is a common allergic disease, which mainly manifests as congestion of the nasal mucosa, runny nose, sneezing and other symptoms. Other common symptoms include nasal congestion, headache, and itchy throat. These symptoms may affect the child\’s quality of life, sleep quality, and learning outcomes. 2. Causes of allergic rhinitis in children The main cause of allergic rhinitis in children is the child’s reaction to certain substances in the air (such as pollen, dust mites, etc.)