Asthma

Extrinsic Asthma

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Extrinsic Asthma, Allergic Asthma

  • See Also
  1. Asthma
  2. Intrinsic Asthma (Non-allergic asthma)
  3. Asthma Evaluation
  4. Asthma Management
  5. Asthma Exacerbation
  • Epidemiology
  1. Much more common in children than adults
  2. Age Onset under 40 years old
  • Pathophysiology
  1. IgE mediated response to allergens
    1. Immediate Allergic Reaction
    2. Late-phase Allergic Reaction
  • Causes
  1. Indoor allergens (perennial allergens)
    1. House Dust mites (most common extrinsic allergen)
    2. Animal proteins (cat or dog dander)
    3. Mold spores (e.g. Alternaria)
    4. Cockroaches (esp. German Cockroach)
  2. Outdoor allergens (seasonal allergens)
    1. Tree, grass or weed pollens
    2. Mold Spores
  3. Samter's Triad
    1. Aspirin or NSAID sensitivity
    2. Nasal Polyps
    3. Asthma
  • Symptoms
  1. See Asthma Evaluation
  • Management
  1. See Environmental Allergen
  2. See Asthma Management
  3. See Asthma Exacerbation
  4. Consider Immunotherapy for those with persistent Allergic Rhinitis and Asthma
  • References
  1. Platts-Mills (2007) Am Fam Physician 76:675-80 [PubMed]