England batsman Jonathan Trott is to take a break from cricket after a recurrence of the anxiety issues that forced him to leave the Ashes series.
Trott, 32, left England's Australia tour in November, because of a "long-standing stress-related condition".
He played a county game for Warwickshire this week, but said: "To my disappointment I've felt the same anxieties that occurred in Australia.
"It is not fair to continue when I am unable to function at 100%."
Trott, who recently spoke of his intention to resume his international career, has played 49 Tests for England.
Trott, 32, left England's Australia tour in November, because of a "long-standing stress-related condition".
He played a county game for Warwickshire this week, but said: "To my disappointment I've felt the same anxieties that occurred in Australia.
"It is not fair to continue when I am unable to function at 100%."
Trott, who recently spoke of his intention to resume his international career, has played 49 Tests for England.