cold urticaria

Sources

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1. About.com
http://dermatology.about.com/library/bldefurticaria.htm

2. DermNet NZ.org
http://dermnetnz.org/reactions/urticaria.html

3. UCLA Department of Medicine
http://www.med.ucla.edu/modules/wfsection/article.php?articleid=181

4. National Guideline Clearinghouse
http://www.guideline.gov/summary/summary.aspx?view_id=1&doc_id=3622

5. Official NIAID Rare Disease Definition and List
The official NIAID document came from http://www.niaid.nih.gov

6. Dr.Greene.com
http://www.drgreene.com/21_650.html

7. Alergic Diseases Resource Center
http://www.worldallergy.org/public/allergic_diseases_center/urticaria/urticaria.shtml