Tiger Woods has confirmed on his official website that he is suffering from an inflamed facet joint in his neck - and is unable to say when he will return to competitive golf.
The world number one, who was forced to pull out of last week's Players Championship with theinjury, underwent a scan in Florida on Wednesday which diagnosed the condition, CNN reported.
Woods revealed: "When the facet joints are inflamed, it causes pain in the affected area as well as headaches and a lot of difficulty rotating the head.
"I now need to take care of this condition and will return to playing golf when I'm physically able."
Physical therapy, including soft-tissue massage, rest and anti-inflammatory medicine will be used to treat the injury.
And although Woods is expected to make a full recovery, a return date cannot be confirmed until the injury has healed properly, CNN reported.
The 34-year-old has played in only three tournaments this season after taking a five month break from golf following revelations about his private life.