"He's dealt with it before," Rand said. "Basically, it's a crack in the skin just like regular people working outside. Unfortunately, the location of it in the thumb area caused him to not be able to pitch coming out in the eighth inning [Thursday]."
Verlander is receiving treatment for it, which is expected to clear it up in time to allow him to prepare for his start.
Jason Beck is a reporter for MLB.com. Read Beck's Blog and follow him on Twitter @beckjason. This story was not subject to the approval of Major League Baseball or its clubs.