Last year, on an episode of Raw in April, Daniel Bryan suffered a severe neck injury.
This left doubts within the company as to whether or not that Bryan would be able to uphold his end of being the WWE Champion.
Bryan would eventually have to under go invasive neck surgery after his match with Kane at Extreme Rules in 2014, which there was a storyline injury put in place so Bryan could take time off to mourn the death of his father at which during his time off however, he lost feeling in his right arm.
Upon his return to Raw on May 12, he announced to the world that he would have to undergo surgery to repair his neck. That night he was attacked once again by Kane and stretchered out of the arena. Bryan under went successful neck surgery on May 15 of that year, to repair a compressed nerve, the procedure is called cervical foraminotomy.
When it looked like Bryan would not be making his return to the ring by Money in the Bank, Bryan was stripped of his title after his wife, Brie Bella, was threatened at Payback by Stephanie McMahon.
Even months after his neck injury, Bryan still hadn't regained full strength back in his right arm. After consulting with several doctors, it was looking like Bryan would have to under go a second surgery, but some of the doctor's felt that Bryan wouldn't be able to return to the ring afterwords. Bryan contemplated the surgery and even contemplated an elbow surgery but ultimately decided against it.
Bryan instead decided to undergo the Muscle Activation Techniques program in Denver, CO. The program successfully returned the strength back to his arm and Bryan then trained in kick boxing and jujitsu to prepare for his return to the ring.
In the recent months since Bryan's return, the company has been shielding him by placing him in 6 Man matches, where he could be protected by his partners, so not to further injure his neck.
It is currently being reported that his health is declining, despite trying to be protected by the company, and has been off of Raw for the past 2 weeks. As of now, he is currently in rough shape as far as his neck is concerned. It is currently unclear as to whether he will indeed require another neck surgery or if it will even be beneficial for his career.