allergic disease traffic sign on blue sky

allergic disease allergy symptoms diagnosis treatment prevention management immune system reaction trigger exposure inflammation sensitivity antibody anaphylaxis hay fever asthma eczema dermatitis rhinitis conjunctivitis food allergies pollen dust mites pet dander mold medications skin prick test blood immunotherapy antihistamines decongestants corticosteroids epinephrine avoidance environment hygiene hypoallergenic lifestyle risk factors