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Walk the Even Hospital Database by book and chapter — the raw source passages that ground Ask, DDx, and the rest.
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©2013 UpToDate ® Print Email Important sources of allergens and route of exposure Allergen group Mode of exposure* Grass pollens Inhalation (outdoor) Weed pollens Inhalation (outdoor) Tree pollens Inhalation (outdoor) Mold (hyphea-spores) Inhalation (outdoor and indoor) Dust mite fecal material Inhalation (indoor) Animal proteins (epidermal and serum) Inhalation (indoor) Foods Ingestion Insects Inhalation-injection (indoor and outdoor) Hymenoptera venoms Injection Parasites Ingestion-injection Drugs Injection-ingestion Occupational Contact-inhalation-ingestion * The principal location where the allergen source is encountered is specified in parentheses.