Common allergic diseases: mainly bronchial asthma, allergic rhinitis (perennial allergic rhinitis and seasonal allergic rhinitis) urticaria, eczema, allergic purpura, drug allergy, food allergy, anaphylaxis, etc. Main symptoms: Nose: itchy nose, itchy throat, itchy palate, nasal congestion, sneezing (in the morning) clear watery nose; Lungs: chest tightness, shortness of breath, coughing, wheezing; Eyes: itchy eyes, tearing, conjunctival congestion, eyelid pain; Skin: red rash with itchy skin, white or red wind clumps with itchy skin; Digestive tract: stomach cramps, vomiting, diarrhea. Eyes: itchy, watery eyes, conjunctival congestion, eyelid pain; Skin: red rash with itchy skin, white or red wind clumps with itchy skin; Digestive tract: stomach cramps, vomiting, diarrhea.