Burt Lauten of the Steelers PR department reports that LB Jarvis Jones has a concussion. He did not participate in practice yesterday, and was listed as out with a head injury. According to Lauten, he first reported symptoms to team doctors on Monday. After being evaluated and treated, he was diagnosed with a concussion Wednesday evening. He has not practiced or been cleared to practice since.

https://twitter.com/SteelersPRBurt/status/390880676393652224

https://twitter.com/SteelersPRBurt/status/390880725336981504