Allergic rhinitis is generally caused by a combination of genetic and environmental factors. 1. Heredity: Allergic rhinitis has family susceptibility, and genetic material such as immunoglobulin heterozygous candidate genes, T-cell surface antigen, and important transcription factors are all related to the development of the disease. 2. Environment: Inhalation of allergens such as dust mites, dust, fungi, animal dander, and consumption of allergenic foods such as peanuts, milk, eggs, and mangoes may induce the body to produce an immune response, leading to allergic rhinitis. Allergic rhinitis patients may experience symptoms such as itchy nose, sneezing and watery nasal discharge, etc. Patients are advised to detach themselves from the allergens in a timely manner and go to the hospital for relevant treatments under the guidance of physicians.