John Terry will continue to see "various specialists" to resolve his long-term nerve injury, Chelsea have confirmed.
The complaint forced Terry to miss the shock 3-0 Barclays Premier League home defeat against Sunderland on Sunday, which served to underline the importance of the England defender to the Blues' title defence.
The 29-year-old admitted that he was no longer able to play with the pain of the injury, which he has battled since the end of last season, and is worried he will now have to take a long-term break in order to fully recover.
A Chelsea spokesman confirmed Terry would continue to receive expert medical care in the search for a cure.
"John reported for training Tuesday morning. He met with club doctors and medical team and discussed plans to continue seeing various specialists to try to find a solution to the nerve problems he has been experiencing in his right leg," said the spokesman.
Terry was already set to miss England's friendly against France at Wembley on Wednesday night. It has been suggested the defender could fly out to Italy later this week in the search for help.
"It is at a point where I cannot carry on with it," Terry said.
"I used to be able to make it through games because the adrenalin gets you going and you blank the pain out. But now there is no decision to make. After games I'm in agony and not sleeping at all."
Terry admits he is concerned over when he may be able to return to full fitness.
"I am at my wit's end. I know I won't play against Birmingham on Saturday, but beyond that there are no clues. It could be weeks, it could be months," added the former England captain.
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