Sports Medicine: Just the Facts

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220 SECTION 3 • MEDICAL PROBLEMS IN THE ATHLETE


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37 ALLERGIC DISEASES


IN ATHLETES
David L Brown, MD
David D Haight, MD
Linda L Brown, MD

INTRODUCTION



  • Allergic rhinitis alone affects over 40 million
    Americans (American Academy of Allergy, Asthma
    and Immunology, 2003). It is the fifth most common
    chronic disease and the most prevalent in patients
    under 18 years of age (Public Health Service, 1997).

  • Urticaria and angioedema affect 20–30% of the popu-
    lation during their lifetime (Kaplan, 2002).

  • Approximately 20,000–50,000 patients with anaphy-
    laxis present for medical care in the United States
    each year, resulting in 400–1000 deaths (Neugut,
    Ghalak, and Miller, 2001).


ALLERGIC RHINITIS


  • Allergic rhinitis occurs when an individual develops IgE
    sensitization to aeroallergens. Inhalation of the aeroal-
    lergens leads to mast cell activation and release of hista-
    mine and other chemical mediators of inflammation.

  • Common symptoms include—rhinorrhea, post-nasal
    drip, congestion, sneezing, cough, and pruritus of the
    nasal and soft palate. Patients may complain of gener-
    alized irritability and fatigue. Eye pruritus, injection,
    irritation, and watery discharge may indicate coexist-
    ing allergic conjunctivitis.

  • Symptoms recur on exposure to any aeroallergen to
    which a patient is sensitized.

  • Spring and early summer exacerbations occur with
    tree and grass pollination. Late summer and fall
    symptoms are usually because of weeds and mold.
    Indoor flares suggest sensitivity to cockroach, dust
    mites, pet dander, or molds. Perennial symptoms may
    be sensitivity to a combination of these allergens or
    indicate nonallergic rhinitis.


NONALLERGIC RHINITIS


  • The etiology of nonallergic rhinitis is unknown.

  • The prominent complaint is nasal congestion. Nasal,
    eye, and soft palate pruritus are usually absent.
    Symptoms are often perennial and triggered by strong
    odors or smoke. Seasonal air temperature, humidity,
    and barometric pressure changes may lead to exacer-
    bations, making it difficult to distinguish from allergic
    rhinitis.


EVALUATION


  • The history should focus on isolating an allergen
    exposure. A personal or family history of asthma,
    allergies, and eczema leads to a higher suspicion for
    allergic rhinitis.
    •Physical examination will not distinguish allergic and
    nonallergic rhinitis.

    1. The nasal mucosa in allergic rhinitis is classically
      pale or bluish, but can be red, edematous, or appear
      normal. Postnasal drip of any etiology causes pos-
      terior pharyngeal cobblestoning. “Allergic shiners”
      from infraorbital venous congestion are also non-
      specific.

    2. Findings suggestive of allergic rhinitis include
      accentuated transverse nasal crease seen in children
      who repeatedly rub their nose because of pruritus
      and atopic stigmata, such as eczema and wheezing
      on auscultation.



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