To determine whether your child has allergic rhinitis, you should make a comprehensive judgment based on the clinical symptoms, as well as the corresponding auxiliary examination. 1. Clinical symptoms: Allergic rhinitis is mainly caused by allergic reactions in the nose, that is, continuous sneezing, runny nose, itching, nasal congestion, and even loss of sense of smell after inhalation of sensitizing substances. 2. Auxiliary examination: Nasal endoscopy will find edema of nasal mucosa, hypertrophy of inferior turbinate, and increased secretion; blood test will find elevated IgE in blood; skin prick test and other tests can also be conducted. If your child develops uncomfortable symptoms and is suspected of having allergic rhinitis, he or she should consult a doctor in a timely manner and follow the doctor’s instructions to conduct the appropriate tests and have the diagnosis made by a professional doctor.