Image
Positive reaction to allergy test
A small area of swelling with surrounding redness is typical of a positive patch skin test for allergy.
A small area of swelling with surrounding redness is typical of a positive patch skin test for allergy.
Check out these best-sellers and special offers on books and newsletters from Mayo Clinic.
NEW — Mayo Clinic Healthy Heart for Life!
Privacy policy (Updated Aug. 2, 2011) Terms and conditions of use policy (Updated Aug. 2, 2011)
LEGAL CONDITIONS AND TERMS OF USE APPLICABLE TO ALL USERS OF THIS SITE. ANY USE OF THIS SITE CONSTITUTES YOUR AGREEMENT TO THESE TERMS AND CONDITIONS OF USE.
© 1998-2012 Mayo Foundation for Medical Education and Research. All rights reserved.
| |   We comply with the HONcode standard for trustworthy health information: verify here. |
Find Mayo Clinic on