Definition:
A raised lesion greater than .5 cm in diameter that contains water and no pus. The plural is bullae.
By Heather Brannon, MD, About.com
Updated: February 15, 2008
About.com Health's Disease and Condition content is reviewed by the Medical Review Board
Photo © CDC/Allen W. Mathies, MD
A raised lesion greater than .5 cm in diameter that contains water and no pus. The plural is bullae.
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