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Australian batsman Chris Rogers's dizzy spell in the second Ashes Test is likely to have been a "delayed ear problem" caused when he was struck on the helmet on day two.

Rogers had to retire hurt on 49 on the fourth morning of the match.

Australia team doctor Peter Brukner said: "The initial scans have cleared him of any serious damage.

"It appears the most likely diagnosis is a delayed ear problem related to being struck on day two."

Rogers signalled to the dressing room after the second over of the fourth day at Lord's before slumping to his knees. He was given medical attention then helped off the field.

The 37-year-old did not field as Australia dismissed England for 103 to complete a and tie the five-Test series at 1-1.

He was hit on the helmet by James Anderson's bouncer in his side's first innings, but continued batting to make a Test-best 173.

"Chris's condition is certainly improving," said Brukner, who is awaiting further test results. "We are confident this is something we can manage in the lead-up to the third Test at Edgbaston.

"As a precaution he'll be reviewed by the specialist in London again on Wednesday morning before rejoining the touring party."

Rogers, who will retire from international cricket after the current series, will not play in the tourists' game against Derbyshire which starts on Thursday. The third Test begins on 29 July.

He missed Australia's two Tests in the West Indies in June through concussion after taking a blow to the head in training, and complained of headaches and dizzy spells for some time afterwards.

In November, Australia batsman aged 25, two days after being struck on the top of the neck by a ball during a domestic match in Sydney.