Spring is coming, and flowers are in full bloom. Many people will develop allergic symptoms. What allergies can occur in spring? How to prevent and treat? The reporter interviewed relevant experts from the Sino Japanese Friendship Hospital. The most common form of spring allergy is allergic rhinitis. Liu Yang, Deputy Director of Otolaryngology Head and Neck Surgery, China Japan Friendship Hospital, analyzed that allergic rhinitis refers to the immune response caused by nose contact with external allergens, and some clinical symptoms such as nasal discharge, itching, runny nose, and stuffiness. "If allergic rhinitis is not eradicated, it can lead to bronchial asthma, long-term swelling and blockage of the nasal mucosa, which can cause sinusitis, nasal polyps, otitis media, and olfactory dysfunction. Long-term nasal congestion can lead to hypoxia and memory loss.". The best way to prevent allergic rhinitis is to cut off contact with allergens, such as wearing a mask and staying away from allergens. Allergic rhinitis can be treated with medication and surgery in a hospital. "Allergic rhinitis can affect the eyes, and the most common symptoms are itchy eyes, red eyes, dryness, and tears." Zhao Tong, deputy director of the ophthalmology department of the Sino Japan Friendship Hospital, said that animal dander, mites, and other common allergens, and the most common seasonal allergen is pollen allergy. For the treatment of eye allergies, you can wear protective glasses with good sealing properties to prevent hands from rubbing the eyes. Cold compress on the eyes can contract blood vessels and quickly relieve itching. Using anti allergy eye drops can also relieve itching. For severe allergic symptoms such as eye swelling and edema, appropriate hormone therapy can be used in conjunction with artificial tears. Zhao Tong reminds: Wash your hands before eyedrops; After opening the eye medication, it should be used up within one month, and if it takes a long time, it should be discarded to avoid secondary pollution; Do not concentrate on using a large amount of eye drops in a short period of time to avoid diluting each other and reducing pharmacological effects. Allergic asthma is also one of the common allergies in spring. Zhang Yongming, deputy chief physician of the Department of Respiratory and Critical Care Medicine at the Sino Japan Friendship Hospital, analyzed that pollen entering the airways can trigger asthma in sensitive populations. In addition, dust mites, mold, pet hair, dander, cockroaches, etc. can also cause allergic asthma. Patients with recurrent wheezing, shortness of breath, chest tightness, cough, and other symptoms should preferably seek medical attention in a hospital, where the doctor can determine whether it is asthma and provide targeted treatment. To prevent allergic asthma, first of all, it is necessary to avoid exposure to allergens and control allergic rhinitis, such as wearing a mask; Secondly, it is necessary to avoid smoking and second-hand smoke, and prevent direct irritation from smoke, dust, etc. In spring, some people develop skin allergies. Sheng Yujun, Deputy Chief Physician of the Dermatology Department of the Sino Japanese Friendship Hospital, said that skin allergies mainly manifested as dry skin, redness, and itching. The main causes of skin allergy are: inhalation allergens, such as dust, pollen; Ingestive allergens, such as seafood; Contact allergens, such as metals; An injectable allergen, such as an injected drug. The main tips for preventing skin allergies include: sunscreen against UV rays and airborne allergens, wear a mask when going out, and try to avoid going out in sunny weather; For allergies to dust mites, spores, or animal dander or hair, open windows frequently for ventilation, and clean animals and clothing, including exposure to sunlight, air drying, etc; For allergies to contact with some metal substances or skin care products or cleaning agents, it is necessary to directly avoid contact. Recently, in northern China