Allergy and Anaphylaxis

Sep 1, 2005 Issue
Itchy Plaques on the Abdomen [Photo Quiz]

Photo Quiz presents readers with a clinical challenge based on a photograph or other image.

Aug 15, 2004 Issue
Allergen Immunotherapy [Article]

Allergen immunotherapy (also called allergy vaccine therapy) involves the administration of gradually increasing quantities of specific allergens to patients with IgE-mediated conditions until a dose is reached that is effective in reducing disease severity from natural exposure. The major objective...

Mar 1, 2004 Issue
Urticaria and Angioedema: A Practical Approach [Article]

Urticaria (i.e., pruritic, raised wheals) and angioedema (i.e., deep mucocutaneous swelling) occur in up to 25 percent of the U.S. population. Vasoactive mediators released from mast cells and basophils produce the classic wheal and flare reaction. Diagnosis can be challenging, especially if symptom...

Nov 15, 2003 Issue
Desloratadine for Allergic Rhinitis [STEPS]

Desloratadine is somewhat effective for the treatment of seasonal allergic rhinitis and may decrease nasal congestion. It also is effective for chronic urticaria. Desloratadine is similar in effectiveness to fexofenadine and would be expected to produce results similar to loratadine and other nonsedating antihistamines.

Oct 1, 2003 Issue
A Practical Guide to Anaphylaxis [Article]

Anaphylaxis is a life-threatening reaction with respiratory, cardiovascular, cutaneous, or gastrointestinal manifestations resulting from exposure to an offending agent, usually a food, insect sting, medication, or physical factor. It causes approximately 1,500 deaths in the United States annually. ...

Sep 15, 2003 Issue
Pruritus [Article]

Pruritus is a common manifestation of dermatologic diseases, including xerotic eczema, atopic dermatitis, and allergic contact dermatitis. Effective treatment of pruritus can prevent scratch-induced complications such as lichen simplex chronicus and impetigo. Patients, particularly elderly adults, w...

Jun 15, 2003 Issue
Stinging Insect Allergy [Article]

Systemic allergic reactions to insect stings are estimated to occur in about 1 percent of children and 3 percent of adults. In children, these reactions usually are limited to cutaneous signs, with urticaria and angioedema; adults more commonly have airway obstruction or hypotension. Epinephrine is ...

Dec 1, 2002 Issue
AHRQ Releases Review of Treatments for Allergic and Nonallergic Rhinitis [Practice Guidelines]

Rhinitis, classified as allergic or nonallergic, is a disorder characterized by inflammation of the mucous membranes lining the nasal passages. An evidence report from the Agency for Healthcare Research and Quality (AHRQ) provides a review of the available literature on the various treatments for allergic and nonallergic rhinitis.

Oct 1, 2002 Issue
Adverse Reactions to Contrast Material. Recognition, Prevention and Treatment [Article]

Adverse reactions to contrast agents range from a mild inconvenience, such as itching associated with hives, to a life-threatening emergency. Renal toxicity is a well known adverse reaction associated with the use of intravenous contrast material. Other forms of adverse reactions include delayed all...

Aug 15, 2002 Issue
Allergy Testing [Article]

Percutaneous and intradermal skin tests and laboratory assays of specific IgE antibodies may be useful in selected cases of allergy management. Percutaneous testing kits are available from various manufacturers. A number of common allergens are available in standardized preparations. Positive and ne...

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