Definition: The smallest form of an acne lesion, it is the very beginning of a pore blockage. It cannot be seen with the naked eye.
Also Known As: Microcomedone, pore blockage, impaction.
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"Microcomedo"
By Angela Palmer, About.com
Updated: June 7, 2007
About.com Health's Disease and Condition content is reviewed by Casey Gallagher, MD
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