Allergies have different symptoms in different parts of the body. Commonly, there are allergies of the skin, nasal cavity, eyes, airways, systemic allergic reactions, anaphylaxis and other allergies. Symptoms include erythema, pimples, wind clouds, itching, sneezing, runny nose, rubbing eyes, wheezing and so on. 1. Skin allergy: Allergy usually tends to manifest itself on the surface of the skin in the form of red rashes and hives with intense itching. 2. Nose allergy: common manifestations are non-stop sneezing and runny nose, and repeated nasal congestion, and the inside of the nose is particularly itchy. 3. Eye allergy: Allergy in the eye area can cause allergic conjunctivitis, which is commonly manifested by frequent blinking and rubbing of the eyes, and the itchiness inside the eyes is more serious. 4. Airway allergy: If you inhale allergic substances through breathing, it will cause airway allergy, resulting in repeated coughing and wheezing and other symptoms, and in severe cases, it will also lead to laryngeal edema, causing respiratory difficulties. 5、Systemic allergic reaction: mostly manifested as generalized swelling of the extremities, redness of the whole body, small papules, blisters, etc., accompanied by itching. 6, anaphylactic shock: mostly manifested as skin rash, dyspnea, blood pressure drop and other symptoms. Allergic patients should pay attention to avoid allergens, timely consultation, and regular use of medication under the guidance of the doctor.