Ravens coach John Harbaugh said doctors have told him to describe Chris Chester's ailment as an infection.
"Cellulitis is a part of it," he said. "Infection covers all of it."
Chester, the Ravens' starting right guard, missed his first game of the season after being hospitalized Thursday with the skin condition. Tony Moll started in Chester's place.
"It's just a matter of how fast that clears up," Harbaugh said. "It could be a week or two. He's going to get back as soon as he can."