Allergies sourcebook : basic consumer health information about the immune system and allergic disorders, including rhinitis (hay fever), sinusitis, conjunctivitis, asthma, atopic dermatitis, and anaphylaxis, and allergy triggers such as pollen, mold, dust mites, animal dander, chemicals, foods and additives, and medications ; along with facts about allergy diagnosis and treatment, tips on avoiding triggers and preventing symptoms, a glossary of related terms, and directories of resources for additional help and information